SI-
Note: Page numbers followed by f, p, or t indicate features, photographs, or tables respectively.
5-
23rd pair of chromosomes. See Sex chromosomes
Abecedarian, 304
Abnormality, 361
Abortion, 72–
Abusive head trauma, 149–
Acceleration, 371
Accident paradigm, 263
Accidents, 348, 464, 546, 548
Acclaim, 498–
Accommodation, 48, 48f, 173, 180
ACE inhibitors, 116t
Ache, 160
Achievement, 359, 516, 535
Achievement tests, 359, 361, 374
Acne, 457
Active labor, 106
Active play, 254, 320–
Activity. See Physical activity
Adam’s apple, 466
Adaptation, 48f, 172, 173–
Addiction
to chat rooms, video games, online gambling, 491–
to drugs, 532, 534, 538p
Additive heredity, 81–
ADHD (attention deficit hyperactivity disorder), 50
Adolescence (11 to 18)
biosocial development, 445–
brain development, 462–
change over time, 443
cognitive development, 475–
delinquency and defiance during, 529–
depression during, 526–
diet deficiencies, 457–
as digital natives, 489–
digital natives, 506
drop-
drug use and abuse, 449, 532–
dual processing brain of, 487–
formal operational stage of development, 47–
friendships during, 519–
genital stage of social development, 40–
growth patterns, 456–
identity formation, 509–
identity vs. role confusion stage, 41–
intuitive and analytical thinking, 482–
irrationality of, 482, 484
logic and self-
psychosocial development, 509–
puberty, 445–
relationships with parents, 495, 498, 513p, 514–
romance, 522–
sexual maturation, 465–
suicide during, 493p, 528–
teaching and learning during, 496–
Adolescent egocentrism, 476–
Adolescent-
Adoption, 272–
Adoptive families, 150p, 272p, 419, 420, 420t, 425
Adrenal glands, 252f
Adult-
Adulthood, 8–
Advanced Placement test (AP), 500, 506
Advertising, 352, 352f, 537
Affection, 558
Affiliation, 558
Affordance
dynamic perception in infants, 182–
factors influencing, 181–
people preference in infants, 183
visual cliff experiments, 182
Afghanistan, 232, 232t
Africa
age of start of puberty, 450
bilingual children in, 295
center-
co-
discipline of children in, 337
infant mortality rates, 162p
malnutrition in, 167
nearsightedness in, 87
norms for walking in, 159
schooling in, 393
special education in, 371
use of left hand in, 247–
African Americans
age of start of puberty, 451, 455, 457
AP test scores, 500
arrests during adolescence, 530
asthma cases, 355
autism among, 367
diet of, 354
education and, 497, 550
height of children, 242
lactose intolerance, 243
low birth weight newborns, 124
norms for walking, 159
parentification of children, 415
parenting style, 326
population of, 31
school drop-
self-
sexual activity among adolescents, 467
sickle-
single-
stereotype threat, 550
study of 5-
teen suicides, 529
treatment of ADHD, 364
Age
drug use differences, 532
first births and, 125p
language learning modality dependent on, 198
low birth weight newborns related to mother’s, 124
nearsightedness affected by, 86
risky behavior related to, 545–
selective perception of affordances influenced by, 181
of start of puberty, 450–
Age of viability, 103, 106, 132
Age-
Aggression, 335–
Aggressive-
Agreeableness, 212
Air pollution, 256–
Alabama, 119
Alaska Natives, 319
Alcohol use and alcoholism
during adolescence, 522, 532–
effects on fetus, 112p
in emerging adulthood, 547
gay youth and, 523
low birth weight newborns caused by, 125
nurture and nature’s influence on, 85–
percent of U.S. women drinking, 119f
as teratogen, 114–
use during pregnancy as a crime, 119
Algeria, 232, 232t
All Joy and No Fun (Senior), 229
Alleles
additive heredity and, 81–
defined, 68
dominant-
homozygous and heterozygous, 70–
polymorphic genes, 72–
variations in, 96
Allergies
as cause of asthma, 355
changes in adolescence, 457
in middle childhood, 351
in young children, 243–
Allocare, 229–
Allostatic load, 544–
Allostasis, 544, 545
Alpha-
Alzheimer’s disease, 91
Ambiguous genitals, 71, 71p
Ambivalent attachment (Type C), 216
Americans. See African Americans;
Asian Americans; European
Americans; Hispanic
Americans; United States
Amino acids, 68
Amniocentesis, 75
Amphetamines, 533f
Amygdala
connections to hypothalamus, 356
effect of puberty hormones, 462
functions of, 246, 251, 254
stress and fear affecting development of, 209
Anal personality, 225
Anal stage of infant development, 40–
Analytical thought, 479p, 482, 482p, 483, 483f, 488, 489, 506, 548–
Ancephaly, 115
Androgens, 447, 452
Androgyny, 332
Anemia, 458
Angelman syndrome, 84–
Anger
during adolescence, 526, 539
control of in early childhood, 312
development of in infancy, 204, 206, 207, 208, 235
regulation of in Iran, 315
SI-
Angular gyrus, 146
Animism, 278, 280, 281, 308
Anorexia nervosa, 460, 460p, 495, 545
A-
Anoxia, 121, 132
Anticipation, 172
Antipathy, 334–
Antisocial behavior
in adolescence, 448
in early childhood, 334–
as learned behavior, 336
teratogens causing, 112
Antisocial personality traits, 211–
Anxiety, 523
Anxiety disorders
abnormalities in HPA axis causing, 446
AP (Advanced Placement) test, 500, 506
Apgar, Dr. Virginia, 107–
Apgar scale, 107, 111, 132
Apgar score, 107, 107t, 126p
Apprentices, 52–
Apprenticeship in thinking, 52–
Aptitude tests, 358–
Arms, 102, 106
ART (assisted reproductive technology). See Assisted reproductive technology (ART)
Artificial insemination, 78
Artistic expression, 260–
Arts education, 394f
Asia
adolescent smoking in, 533
asthma cases, 355
bilingual children, 295
co-
educational emphasis in, 391
height of children, 242
international test scores, 395
language acquisition in, 191
malnutrition in, 167, 168, 168t
nearsightedness of, 87
neural tube defects among, 115
response to alcohol, 86
special education, 371
synchrony, 214
use of left hand, 247–
Asian Americans
age of start of puberty, 451
AP test scores, 500
autism among, 367
childhood obesity, 353
population of, 31
self-
teen suicides, 529
Asperger syndrome, 367
Aspirin, 118
Assimilation, 48, 48f, 173, 180
Assisted reproduction, 77–
Assisted reproductive technology (ART), 78–
Associative play, 320
Asthma, 257, 354–
at about this time
emerging adulthood, 543t
emotional development, 204t
fine motor skills, 159t
gross motor skills, 156t
language development, 187t, 291t
math learning, 393t
psychosocial maturation of middle childhood, 410t
reading learning, 393t
stages of attachment, 215t
Attachment. See also Bonding
continuum of, 216f
defined, 215
development of, 216, 235
effect on emerging adults, 558
measurement of, 218–
norms, 215
patterns of, 217t
predictors of type, 219, 219t
prevention of problems, 219–
Romanian adoptees, 219–
signs of, 215, 217
stages of, 215t
as survival technique, 229
types of, 217–
Attempted suicide, 528
Attention, 357, 359p, 361
Attention deficit/hyperactivity disorder (ADHD)
causes of, 250, 251–
diagnosis and treatment of, 362–
early detection of, 189
effects of, 49p, 363p
medication for, 364f
special education for, 370
symptoms of, 50
Attitudes, 19, 22, 34
Auditory communication, 105
Auditory cortex
development of, 146, 152–
functions of, 246
proliferation and pruning in infancy, 151
specialization, 143
Australia
bilingual children in, 387
cohabitation in, 560
college graduates in, 551t
co-
high-
international test scores, 396
low birth weight newborns, 124t
paid maternal and paternity leave in, 232t
view of pride in, 412
Authoritarian parenting, 324, 333, 342, 390, 515
Authoritative parenting, 324, 333, 342, 515
Autism spectrum disorder (ASD)
causes of, 29p, 369
development of corpus callosum and, 247
development of theory of mind and, 288
early detection of, 189
genetic predisposition to, 92
immunizations associated with, 29–
lack of pruning of brain connections, 146
percent of children with, 370
research on, 370
symptoms of, 367–
treatment of, 20p, 368
use of pragmatics affected by, 387
Automatic reading, 357
Automatization, 357–
Autonomy
in early childhood, 41–
striving for in adolescence, 514–
Autonomy vs. shame and doubt, 41–
Autosomes, 70–
Avoidant attachment (Type A), 216
Axons, 143, 144, 144f, 246
Babbling, 187, 188–
Babinski reflex, 127
Baby blues, 128
Baby Einstein, 195
Baby talk, 188
Baby transport, 226p
Backlash, 537
Back-
Bali, 160
Bandura, Albert, 45, 45p
Bangladesh, 124t
Bariatric surgery, 80
Baumrind’s styles of caregiving, 324–
Bed-
Beginning of pregnancy, defined, 100
Behavior problems, 364f, 497–
Behavioral teratogens, 112, 114, 132
Behaviorism
application to infant psychosocial development, 225–
on breast-
conditioning, 42–
contributions of, 61
criticism of, 55, 61
defined, 38
on gender identity in early childhood, 329–
teacher-
theory of language learning, 193–
on toilet training, 51
Belgium, 232t, 396, 477
Belief systems, 11–
Belonging, 55–
Beng people, 160
Bickering, 514–
Bicycle accidents, 477
Big Five traits, 212
Bike riding, 53
Bilingual children, 295f, 296p, 384, 387f, 400p
Bilingual learning
in early childhood, 309, 358
listening and responding, 187–
in middle childhood, 387–
national differences, 400
sensitive period, 297
substitution of words between languages, 293
Bilingual schooling, 388
Binge eating disorder, 461
Binge-
Binocular vision, 154, 160
Bioecological theory, 19, 34
Biological sequence of puberty, 447
Biopsychosocial development, 8
Biorhythms, 447–
Biosocial development
academic disciplines of, 7–
in adolescence, 445–
defined, 7f, 34
in early childhood, 241–
effects of genes and nurture, 137
in emerging adulthood, 544–
in infancy, 137–
in middle childhood, 347–
nature-
puberty, 445–
Bird brains, 147
Birth
changes over time, 99–
complications during, 121, 132
c-
first minutes of life, 107–
low birth weight causes and consequences, 122–
medical assistance, 108–
positions for, 106, 106p
process of, 107f, 132
teratogens, 112–
vulnerability during, 101, 101t
Birth weight. See also Low birth weight (LBW)
of boys and girls, 138f
cause and consequences of low birth weight, 122–
childhood obesity related to, 354
risk for SIDS, 163
in various nations, 124t
Birthing centers, 110, 111, 132
Birthing classes, 120
Bisphenol A (BPA), 118, 257, 452
Biting, 158
Blastocyst, 74, 75, 101
Blindness, 151, 175
BMI (body mass index), 242, 351, 460
Bodily-
Body changes
in adolescence, 445–
in early childhood, 241–
in emerging adulthood, 544–
SI-
in infancy, 138–
during middle childhood, 348–
Body fat, 450–
Body image, 454, 459–
Body mass index (BMI), 242, 351, 460
Body rhythms, 447–
Body size
adolescence growth spurt, 456–
effects of maltreatment in childhood, 270
growth in early childhood, 241–
growth in first two years, 138, 139p, 142f
growth in middle childhood, 348
Bolivia, 124t
Bonding, 130–
Book reading, 297
Bottom-
Brain. See also specific part of the brain
in adolescence, 472
of birds, 147
changes with college, 549p
changes with music, athletics, math learning, 372
communication within, 143
connection of hemispheres, 247, 248
dual processing and, 487–
effect of exercise on, 349
effects of maltreatment in childhood, 270
grammar acquisition and, 294
harm to infants’ brains, 148–
language acquisition and, 295–
lead’s effect on, 257–
left and right side functions, 248
malnutrition and, 167
myelination of, 246–
parts and functions of, 246f
plasticity, 359
pruning, 104, 142, 145, 146, 151, 208
shaken baby syndrome, 149–
stimulation’s effect on, 149
Brain development
ability to develop theories associated with, 289–
in adolescence, 462–
attachment’s effect on, 219–
automatization development, 357–
development of connections within, 142–
in early childhood, 245–
effects of nature and nurture, 144, 208–
in emerging adulthood, 548–
emotional development and, 207–
experience-
in infancy, 142–
as lifelong process, 360
maturation of prefrontal cortex, 248–
in middle childhood, 356–
in prenatal period, 103, 104, 105, 105f, 106, 132
reaction time decreasing, 357
selective attention development, 357
social deprivation’s effect on, 150–
specialization, 143
stress’s effect on, 149, 209
teratogens’ effect on, 112, 113, 132
Brain scans, 360
Brain stem, 142, 143
Brazelton, Barry, 50
Brazelton Neonatal Behavioral Assessment Scale (NBAS), 127, 155, 221
Brazil
breastfeeding statistics, 63
childhood play in, 254
c-
low birth weight newborns, 124t
overeating in, 242
paid maternal and paternity leave in, 232t
Breadwinners, 513
Breast development, 445–
Breast-
benefits of, 164, 165–
at birth, 107
cessation of, 227
childhood obesity and, 353
co-
c-
diversity of attitudes, 63
infant’s response to, 158
Breathing reflex, 127
Broca’s area, 146
Bronfenbrenner, Urie, 34
Bulgaria, 232, 232t
Bulimia nervosa, 460–
Bullying aggression
in adolescence, 491, 497, 499
delinquency and, 531
drug use and, 532
in early childhood, 336
in middle childhood, 431–
Bully-
Caffeine, 117t
Calcium, 458
Cambodia, 108
Cameroon, 226, 232, 232t, 319
Canada
cigarette advertising in, 533
cohabitation in, 560
college graduates in, 551t
co-
c-
discipline of children in, 337
education in, 305, 394
infant mortality rate, 161
international test scores, 396, 502
language shift in, 296
low birth weight newborns, 124t
official languages of, 295
paid maternal and paternity leave in, 232t
single-
Cancer, 545t
Cardiovascular system, 457
Caregivers. See also Parent-
early-
parenting styles, 324–
Caribbean, 168, 168t
Caribbean Americans, 326
Carrier, 82–
Case to study
Mickey Mantle, 88
adrenaline junkie, 547
Bethany and Rachel Berger-
defined, 24–
how hard is it to be a kid? 426
James, the high achieving dropout, 498
Lynda is getting worse (ADHD), 365
my baby swallowed poison, 263
plasticity and David, 21
scientist at work (SIDS), 162–
stones in the belly (preschool cognition), 281
sudden infant death syndrome, 162–
two immigrants (educational achievement), 398
“what were you thinking?” (adolescent risk taking), 463
Causation, 28–
Cell division, 74, 74p, 96
Cell phones, 489, 493, 521
Cells
differentiation, 74, 79, 96
division of, 74
functioning of, 68
protein production in, 69
Center-
Central Europe, 167, 168, 168t
Central nervous system
development during infancy, 142–
prenatal development of, 102, 103, 106
Centration, 278, 279, 308
Cephalo-
Cerebellum, 246
Cerebral cortex, 246
Cerebral palsy, 121
Cesarean section (c-
Chad, 108, 124t
Challenges for caregivers, 342
Charter schools, 401–
Chewing, 158
Chicken pox, 116t, 164
Child abuse. See also Child neglect; Maltreatment of children
accuracy of data, 268–
consequences of, 269–
defined, 266
effect on attachment to infants, 221
effect on brain development, 209, 213
effect on the brain, 235
frequency of, 268
prevention of, 270–
in United States, 266–
warning signs, 269
Child culture, 429, 429p, 433, 434, 436–
Child neglect
accuracy of data, 268–
consequences of, 269–
defined, 266
frequency of, 268
prevention of, 270–
in United States, 266–
warning signs, 269
Child sexual abuse, 469
Child-
Child-
Child-
Childhood, 8–
childhood (two to six); Infancy
(first two years); Middle
childhood (six to eleven)
Childhood obesity
in adolescence, 459p
in early childhood, 242–
early warning signs, 138
increase in adolescence, 459
leptin’s role in, 452–
in middle childhood, 351–
start of puberty influenced by, 450, 451, 452
survival techniques associated with, 154
Childhood overweight, 351–
Child-
Children’s theories
theory of mind, 287–
theory-
Children’s values, 436–
Chile, 124t, 161, 232, 232t, 516
China
artistic expression in, 261
center-
colleges in, 554–
co-
c-
education in, 302, 392, 496
high-
international test scores, 502
Internet use in, 492
SI-
language shift in, 296
low birth weight newborns, 124t
math learning, 285
norms for walking in, 159
“one-
play in, 319
popularity of shy children, 430
regulation of pride in, 315
self-
sexual activity among adolescents, 467
SIDS incidents, 162–
teen births in, 468
treatment of ADHD in, 364
twinning in, 77
view of pride in, 412
Chinese Americans, 283, 326, 457
Chinese language, 191
Chinese Taipei, 396
Chlamydia, 116t, 470
Chlorpyrifos, 117–
Choice overload, 560
Chorionic villus sampling (CVS), 75
Chromosomal abnormalities, 89–
Chromosome 15, 84
Chromosomes. See also DNA (deoxyribonucleic acid); Genes; Sex chromosomes
defined, 68, 69
duplication of, 74, 79
at fertilization, 70
number in humans, 68, 71f, 72
sex determination, 71p
structure of, 69f, 70p
Chronosystem, 18f, 19–
Circadian rhythm, 448, 456, 458
Circular reactions, 172–
Citizenship, 392, 434p
Clapping, 172
Classic secure attachment, 215
Classical conditioning, 43–
Classification, 378
Cleaning compounds, 116t
Clinical depression, 526–
Cluster suicide, 529
Cocaine, 117t, 532, 533f
Cochlear implant, 151, 187
Cockroaches, 478p
Code-
Code-
Cognition
college’s effect on, 551–
in infancy, 153, 173, 180
measuring practical cognition, 503–
stereotype threat disrupting, 550
technology’s effect on, 490–
Cognitive coping, 415–
Cognitive development
academic disciplines of, 7, 8
in adolescence, 475–
brain and context, 289–
children’s theories, 286–
defined, 7f, 34
in early childhood, 277–
early-
in emerging adulthood, 548–
in infancy, 171–
language acquisition, 290–
in middle childhood, 377p, 441
sexual abuse impairing, 470
thinking, 277–
Cognitive disequilibrium, 48, 48f
Cognitive equilibrium, 48, 48f
Cognitive revolution (1980), 46–
Cognitive theory
application to adolescence, 482–
application to infant psychosocial development, 226–
application to middle childhood, 396–
on breast-
concepts of, 38, 46–
contributions of, 61
criticism of, 61
on gender identity in early childhood, 330, 342
in middle childhood, 377–
stages of cognitive development, 172–
on toilet training, 51
Cognitive-
Cohabitation, 560–
Cohort
artistic expression influenced by, 261
body weight affected by, 353
co-
defined, 19
drug use variations, 533
effect on early-
effects of college on cognition affected by, 552–
influence on attitudes and habits, 22, 34
language shift influenced by, 296
personality traits affected by, 558
play influenced by, 319–
sexual activity influenced by, 467, 523
Cohort-
Colic, 6–
College entrance, 502–
College students
diversity of, 555, 555p, 563
drug abuse among, 547, 548
effects of college on cognition, 551–
graduation rates, 551t
motivations for enrollment, 554–
self-
thought processes of, 549
use of social media, 560
College-
Color blindness, 83, 83t
Colostrum, 107, 165
Columbia, 225, 396
Commitments in relativism development, 553t
Common Core standards (2010), 399, 399p, 400, 400t, 405, 406, 500, 501
Communication, 515–
Communication milestones, 192
Communion, 558
Comorbidity, 363
Comparison group, 24
Complications during birth, 121, 132
Computers, 490–
Conception, 68, 68p, 71, 96, 101, 101f
Concrete operational stage, 47–
Concrete situations, 378
Conditioning, 42–
Condom use, 468, 471, 471f
Conflict within the home, 427–
Conjoined twins, 75
Connectedness, 515–
Conscientiousness, 212, 391
Conservation, 279–
Contact-
Contentment, 204, 207, 235
Continuum of attachment, 216, 216f
Contraception, 468, 531, 545
Control, 516, 518
Control group, 24
Control processes, 384–
Conventional behavior, 333
Conventional moral reasoning, 434–
Convergent thinkers, 372
Cooperative play, 320
Copy number variations, 83–
Corporal punishment, 223f, 337–
Corpus callosum
functions of, 246, 254, 356
myelination of, 247, 254, 259
Correlation, 28–
Cortex
development of, 144
emotional development and maturity of, 207–
functions of, 143, 152
myelination of, 462
Cortisol
daily hassles producing, 414
effect on infant brain, 204–
effect on the brain, 251–
levels associated with SES, 415
levels in adolescents, 447
onset of puberty and, 454
Co-
Co-
Costa Rica, 108
Cost-
Cot death, 162–
Couvade, 129
Crawling, 156–
Creativity, 314, 465
Creeping, 157
Crib death, 162–
Crime, 530–
Critical periods. See also Sensitive periods
defined, 16–
for language learning, 291–
for teratogens, 113, 114
Croatia, 123, 232, 232t
Cross-
Cross-
Cross-
Cross-
Crying
in early childhood, 248, 313
in infancy, 155, 204, 207, 209p, 225p, 227, 227p, 228
as reflex in newborns, 127
as response to hunger, 180
response to infants’ cry, 50, 149–
of toddlers, 206
C-
Cuba, 123, 124t
Cultural attachment, 215
Cultural patterns, 52
Cultural sponge, 208
Cultural values, 1
Culture. See also Social context
acceptable foods related to, 221p
alcohol consumption and, 532
artistic expression influenced by, 261
caregiving styles and, 324p
childhood obesity and, 353–
of children, 429
co-
defined, 11
developmental variations related to, 11p, 159–
difference-
emotional development influenced by, 205–
emotional regulation influenced by, 315
encoding in brain, 208
family function influenced by, 427, 516, 517
fine motor skills influenced by, 158
gender identity influenced by, 330–
gross motor development influenced by, 157, 256
impact on phenotype, 85–
impact on sexual activity, 467
injury prevention and, 264–
internalizing and externalizing behavioral differences, 316
international test scores and, 395–
SI-
IQ and aptitude tests influenced by, 360
language acquisition influenced by, 190–
language shift influenced by, 296
learning influenced by, 281–
maltreatment of children defined by, 269–
morality defined by, 333
onset of puberty and, 455
parenting style influences by, 326–
personality affected by, 226
play influenced by, 319–
romantic relationships affected by, 522
selective perception of affordances influenced by, 181–
self-
sex selection and, 73
sexual activity influenced by, 523
SIDS related to, 162–
sleep pattern differences, 139, 142
as social construct, 11, 34
views of day care, 230–
Cumulative stress, 414–
Curiosity, 204, 207
Current opportunities, 384
Cutting, 495
CVS (chorionic villus sampling), 75
Cyber danger, 493–
Cyberbullying, 431, 491, 493, 493p, 495
Cystic fibrosis, 91, 95p
Czech Republic, 551t
Daily hassles, 414–
Darwin, Charles, 57–
Data, 22, 22t
Dating violence, 488–
Day care
day care during, 235
for early childhood, 298, 422p
for infants, 230–
quality of, 231t
Deafness
development of theory of mind and, 288
language acquisition, 187
preference for sign language, 197
Death. See also Sudden Infant Death Syndrome (SIDS)
due to injuries, 261–
due to obesity, 352
during emerging adulthood, 546
of pedestrians, 265f
top three causes, 545t
of young children, 261, 265
Deductive reasoning, 480, 480f, 481, 483, 483f
Deferred imitation, 177, 180, 200
Defiance, 315, 529–
Delay of gratification, 313–
Delinquency, 529–
Delivery. See Birth
Dementia, 356
Dendrites
changes with remembered experiences, 186
formation of, 146, 207
proliferation during early childhood, 246
structure and function of, 143, 144, 144f
Denmark, 124t, 298, 396
Deoxyribonucleic acid (DNA), 68, 69, 70. See also Chromosomes; Genes
Dependent variable, 24
Depression
abnormalities in HPA axis causing, 446
during adolescence, 526, 526–
causes of, 6, 92, 205, 251–
communication between parent and child’s effect on, 516
drug use and, 532, 535
effect of fathers’ on mothers and infants, 223
effect of mother’s on infants, 214–
effect on fetus, 6, 6p
gay youth and, 523
onset of puberty and, 455
as result of cyberbullying, 493
sex differences, 447
sexual abuse related to, 495
Depth perception, 154, 160, 182, 182p
Development. See also Biosocial
development; Cognitive
development; Psychosocial
development
domains of, 7–
factors affecting, 1
scope of study, 99
Developmental crisis, 41–
Developmental delays, 370
Developmental growth patterns, 16
Developmental level, 181
Developmental psychopathology. See also
Attention deficit/hyperactivity
disorder (ADHD);
Autism spectrum disorder
(ASD)
diagnosis and treatment of, 361–
dyscalculia, 366
dysgraphia, 366
dyslexia, 366
principles of, 361, 362
special needs in middle childhood, 361–
specific learning disorder, 365–
Developmental schools, 299–
Developmental theory, 38
Deviancy training, 521
DHA, 118
Diabetes, 15, 69, 80
Diagnostic and Statistical Manual of Mental Disorders (DSM?5), 362
Dialectical behavior therapy, 528
Diet drugs, 534
Difference-
about infant day care, 231
about left-
about sexual orientation, 10–
about socioeconomic status, 14
balanced perspective, 14–
culture, ethnicity, and race and, 11–
defined, 9–
sexual orientation and, 34
Differential susceptibility
defined, 6–
depression and, 526–
fetal alcohol disorders and, 115
onset of puberty and, 453, 454
parenting style and, 325
responses to stress, 413, 417
temperament and, 212
Differentiation, 74–
Difficult babies, 210–
Digestive system, 103
Digital divide, 489
Digital natives, 489–
Dioxin, 116t
Disability, 361
Discipline
corporal punishment, 337–
importance of, 311
psychological control, 339–
psychosocial control, 342
time-
Discoveries, 38
Diseases. See also specific disease
copy number variations causing, 83–
dominant-
of early adulthood, 544, 546
genetic disorders, 75, 90, 96, 348
malnutrition causing, 167, 169
in middle childhood, 348
recessive-
Rett syndrome, 367–
spread of, 546
top three causes of death, 545t
trisomy disorders, 89–
X-
Disequilibrium, 48f
Disgust, 206
Disorganized attachment (Type D), 216, 217, 217t, 235
Disruptive mood dysregulation, 363
Distal parenting, 226
Distress, 204, 207, 235
Divergent thinkers, 372
Diversity, 59, 70, 555, 555p, 563
Divorce, 419, 420, 420t, 421, 427, 561
Dizygotic (DZ) twins, 76, 76f, 77, 79, 81, 81p, 96
DNA (deoxyribonucleic acid), 68, 69, 70
Domains of human development, 7f
Dominant genes, 82–
Dominant-
Dominant-
Dominant-
Doubt, 41–
Doula, 110p, 111
Down syndrome, 89–
Drama, 321–
Dreaming, 139–
Drop-
Drug laws, 531, 535
Drug use and abuse
ADHD caused by, 363
during adolescence, 449, 532–
defined, 547, 548
effect on birth weight, 122
in emerging adulthood, 547–
epigenetic effects of, 80
gay youth and, 523
harm from, 534–
low birth weight newborns, 125
off-
prevention of, 535, 537–
sexual abuse related to, 469
signs of, 535
variations by age, 532
variations by place, generation, and gender, 532–
Dualism modified thinking, 553t
Duchenne muscular dystrophy, 91
Due date, 100
Duplication, 74, 79
Dynamic perception, 182–
Dynamic sensory-
Dynamic-
to childhood obesity, 354
on concepts of male and female behavior, 327, 328
defined, 18p, 19, 20–
risk analysis for teratogen exposure, 113
view of effects of past history/current context, 413
Dyscalculia, 366, 370
Dysgraphia, 366
Dyslexia, 189, 366, 366p, 370
Early childhood (2 to 6)
accuracy of testimony, 289
acquisition of skills, 239
anal stage of social development, 40–
artistic expression during, 260–
autonomy vs. shame and doubt stage, 41–
biosocial development, 241–
body changes, 245
brain and context, 289–
brain development, 245–
challenges for caregivers, 324–
children’s theories, 286–
cognitive development, 277–
SI-
concrete operational stage of development, 47–
conservation and logic in, 279–
growth patterns, 241–
initiative vs. guilt stage, 41–
language acquisition, 290–
maltreatment during, 266–
motor skill development, 254–
nutrition, 242–
oral health, 244
phallic stage of social development, 40–
play, 317–
preoperational intelligence, 47–
psychosocial development, 311–
schooling, 298–
social context affecting cognition during, 281–
speed of thought in, 246–
thinking during, 277–
Ears, 102, 132
East Asia
ADHD in, 363
international test scores, 395, 405
malnutrition in, 167, 168, 168t
East Europe, 168, 168t
Easy babies, 210–
Eating disorders
abnormalities in HPA axis causing, 446
in adolescence, 472
anorexia nervosa, 460
binge eating disorder, 461
bulimia nervosa, 460–
sexual abuse related to, 469
Eating habits, 53–
E-
Eclectic perspective, 61–
Ecological model, 18, 18f
Ecological-
defined, 17, 34
historical change, 19–
systems within systems, 17–
Education. See also Schools
during adolescence, 496–
cigarette smoking related to, 496
Common Core standards, 399, 400, 405, 406, 500, 501
computer use and, 490, 492–
differences in curriculum, 392–
drop-
in early childhood, 298–
effects of college, 551–
employment and, 512–
ethnic diversity in schools, 403, 405
fine motor skills required for school, 260
forms of discipline affecting, 338, 340
graduation rates, 502f
graduation rates in U.S., 536f
hidden curriculum, 394–
in high school, 500–
income related to, 551, 552f, 555, 563
intellectual stimulation related to, 379–
international contexts, 380–
international tests, 395–
long-
maternal education, 389f
in middle childhood, 404, 404f
in middle schools, 497–
No Child Left Behind Act, 399, 405, 406, 412
nutrition and, 459
preparation for, 303–
schedule for high school students, 448p
second language learning, 400
sex education, 524–
special education for special needs children, 369–
success related to, 496
testing, 500p
timing of classes for adolescents, 448–
in the United States, 398–
use of technology, 490–
Education of All Handicapped Children Act (1975), 369
EEG (electroencephalogram), 178, 178p
Effect size, 22, 22t
Effortful control, 211, 312, 391, 411–
Egocentrism
in early childhood, 278, 279, 281, 287, 290, 308
faith associated with, 486
risky behavior of adolescents and, 477, 481, 485, 520p
self-
Egypt, 115, 124t
El Salvador, 392
ELBW (extremely low birth weight), 122, 132
Electra complex, 328
Electroencephalogram (EEG), 178p
E-
Embarrassment, 206
Embodied cognition, 349
Embryo, 74, 102, 102p
Embryonic period
defined, 100, 132
development during, 102, 102p, 106
teratogen exposure, 113
vulnerability during, 101, 101t
Emerging adulthood (18 to 28), 543
biosocial development, 544–
cognitive development, 548–
countering of stereotypes, 549–
defined, 543
effects of college on cognition, 551–
fertility, 545
health during, 544–
intimate relationships, 558–
norms for, 543t
postformal thought, 548–
psychosocial development, 17p, 556–
relationships with parents, 561–
risky behavior, 545–
Emotional development
in adolescence, 462
brain’s role in, 207–
in early childhood, 248, 254, 311–
emotional regulation, 250–
in infancy, 204–
initiative versus guilt, 312–
motivation, 314–
norms, 204t
Emotional disturbance, 370
Emotional expression, 250–
Emotional regulation
bullying and, 432
as control process, 384
cultural influences on, 315
development during early childhood, 250–
direction needed in early childhood, 336
educational achievement of children related to, 391
externalizing and internalizing problems, 316–
Emotions
in adolescence, 484–
of survival, 228–
Empathy, 38p, 334–
Empirical evidence, 4, 34, 39
Employment, 17p, 512–
England. See also United Kingdom
cohabitation in, 560
early childhood education in, 305
efforts to halt bullying in, 433
international test scores, 396
nearsightedness in, 87
neural tube defects in, 115
paid maternal and paternity leave in, 232
World War II’s effect on children, 414–
English as a second language (ESL), 388
English language, 191
English language learners (ELL), 388
Entity theory of intelligence, 499
Environmental factors
child development impacted by, 416–
influence on gross motor development, 256–
influence on phenotype, 79–
puberty affected by, 452
Epigenetics
body development controlled by, 241
brain development controlled by, 144, 241
defined, 69, 73, 96
diversity within species and, 70
phenotype affected by, 80–
social activity affected by, 59–
Equifinality, 362, 368
Erikson, Erik
identity vs. role confusion, 509–
industry vs. inferiority, 410, 416, 439
initiative vs. guilt, 312–
intimacy vs. isolation, 558–
photograph of, 42p
stages of development, 41–
trust vs. mistrust, 225, 230, 235
ERPs (event-
Esteem, 55–
Estonia, 502
Estradiol, 447
Estrogens, 447, 452
Ethical behavior, 333
Ethical development, 553t
Ethics, code of, 30, 32, 33, 34
Ethiopia, 124t
Ethnic diversity, 403, 405
Ethnic group, 12
Ethnic identity, 512, 520
Ethnicity
effect on onset of puberty, 455, 457
population by, 31
sexual activity among adolescents influenced by, 467
as social construct, 11, 12, 34. See also specific ethnic group
Eugenics, 32
Euphoria, 128
Europe
alcohol consumption in, 532
baby’s sleep location, 140
bilingual children in, 295
characteristics encouraged in, 312
cohabitation in, 560
discipline of children in, 337, 338
international test scores, 395
low birth weight newborns, 123
malnutrition in, 167, 168, 168t
sex education in, 525
SIDS cases in, 162–
European Americans
age of start of puberty, 451, 455, 457
arrests during adolescence, 530
asthma cases, 355
autism among, 367
cystic fibrosis incidence, 92
height of children, 242
norms for walking, 159
parentification of children, 415
SI-
parenting style, 326
population of, 31
self-
sexual activity among adolescents, 467
teen suicides, 529
treatment of ADHD, 364
twinning among, 77
Eveningness, 448
Event-
Evolutionary theory
application to infant psychosocial development, 228–
on breast-
concepts of, 38, 57–
on eating habits, 154
on gender identity in early childhood, 331, 342
of language learning, 196–
on marriage, 60–
on moral development, 333
on onset of puberty, 453–
E-
Excretory system, 103
Executive function, 289–
Executive processes, 384
Exercise. See Physical activity
Exosystems, 18, 18f, 264
Expectations, 390, 396
Experience-
cognitive development, 146–
in early childhood, 241
play as, 319
Experience-
cognitive development, 146–
in early childhood, 241
language acquisition, 188, 197
play as, 319
Experiences
effect on the brain, 143, 146–
facilitating increases in knowledge, 384
moral development initiated by, 334–
necessary and possible, 146–
preception related to, 152
responses to, 413
selective perception of affordances influenced by, 181, 182
Experimental group, 24
Experiments
aims of, 28
defined, 23f
Institutional Review Board (IRB), 30, 32
integrity in, 32–
process of, 23–
protection of research participants, 32
Expressive language, 294
Extended family, 419, 420, 420t, 422, 427
Externalizing problems, 316–
Extreme sports, 546–
Extremely low birth weight (ELBW), 122, 132
Extrinsic motivation, 314
Extroversion, 212
Exuberance, 145
Exuberant babies, 211
Eye color, 82
Eye-
Eyelashes, 103
Eyes, 102, 132
Fables of adolescence, 477
Face recognition, 147–
Facebook, 478, 489, 493, 560
Facial hair, 446, 451, 457, 466
Facilitation of behavior, 521–
Factor analysis, 22, 22t
Facts, 39, 64
Failed suicide, 528
Failure to thrive, 138
False positive, 120
False-
Familism, 526
Family bonding, 130–
Family function. See also Parent-
closeness within, 516–
conflict within the home, 428, 428p, 514–
cultural differences in, 316p
eating disorders and, 461
effect on children, 418–
family pride, 10p
family structure connected to, 422–
importance in emerging adulthood, 561–
in middle childhood, 416–
protection against drug abuse, 532
as source of intellectual stimulation, 379–
wealth and poverty troubles, 390p, 427–
Family structure
adoptive families, 419, 420, 420t, 425
around the world, 290p, 423
delinquency and, 531
effect on children, 418–
extended family, 419, 425, 427
family function connected to, 422–
nuclear family, 419, 422, 424, 426–
polygamous family, 420
same-
single-
skipped-
step families, 421p
stepparent families, 419, 420, 420t, 424–
Family-
Fast-
Fathers
bonding, 130–
couvade, 129
effect of absence of, 27
effect on birth weight, 123
effect on children’s social and emotional development, 221–
fetal development affected by, 1
needs of, 227
response to newborns, 127
role in birth, 100, 128–
role in child care, 203, 222p, 224, 230–
role in pregnancy, 105
spanking, 223f
Fear
amygdala and, 251
control of in early childhood, 312, 313, 316
development of in infancy, 204, 205–
effect on the brain, 209, 213
regulation of in US, 315
in toddlerhood, 206
of unexpected sights and sounds, 204, 205
Female karyotype, 71
Fertility, 79, 545
Fertility rate, 161–
Fertilization, 68p, 101, 101f
Fetal alcohol syndrome (FAS), 112p, 114
Fetal development, 1, 16–
Fetal period
defined, 100, 132
development during, 102, 106
vulnerability during, 101, 101t
Fetus
defined, 102
development of, 74, 102–
effect on family, 125, 127
effects of maternal depression, 6
effects of teratogens on, 112–
harmful substances, 112–
mother-
File drawer problem, 32
Fine motor skills
development during infancy, 157–
development in early childhood, 255p, 258–
norms, 159t
Fingernails, 103
Finland
college graduates in, 551t
educational system in, 395–
efforts to halt bullying in, 433
international test scores, 396, 502
low birth weight newborns, 124t
schooling in, 393
First acquired adaptations, 172, 173–
First love, 522–
First minutes of life, 106–
First sentences, 187
First trimester, 101–
First words, 187, 189, 192
First-
Fish, 118
Flipped class, 553
Flu, 112, 164
Flying storks, 110
Flynn effect, 359
FMRI (functional magnetic resonance imaging), 178, 178p, 179
FNIRS (functional near-
Focus on appearance, 278, 279
Folic acid, 113, 115
Folk psychology, 287–
Folk theories, 37–
Food insecurity, 124–
Foreclosure, 510, 539
Formal linguistic code, 387, 391
Formal operational stage, 47–
Formal operational thought, 478–
Foster care, 272, 273
Foster families, 419
Fragile X syndrome, 91, 146
France
center-
cohabitation in, 560
condom use in, 471
early childhood education in, 298
international test scores, 396
paid maternal and paternity leave in, 232, 232t
single-
sound preference of infants, 190
use of alcohol during pregnancy, 115
Fraternal twins. See Dizygotic (DZ) twins
French language, 191
Freud, Sigmund
on gender identity, 328–
on infant psychosocial development, 224–
on latency of middle childhood, 410–
photograph of, 40p, 44p
stages of development, 40–
Friendships. See also Peer relationships
across ethnic lines, 13p
during adolescence, 519–
drug use and, 535
in middle childhood, 430, 433
selection of, 521p
selection of friends, 521–
Frontal cortex, 143
Frontal lobe development, 462–
Fronto-
Frustration, 204
SI-
Functional magnetic resonance imaging (fMRI), 178, 179
Functional near-
Fusiform face area of brain, 148
Gambia, 168
Gamete, 68
Gangs, 521, 530
Gender, defined, 513
Gender differences
of adolescent drug use, 533
in depression rates, 526–
in educational attainment, 397–
in lawbreaking, 530–
in motor development, 260, 261
in play, 321–
psychopathology, 447
risky behavior, 545–
start of puberty, 450, 472
in teen suicides, 529
Gender dysphoria, 332, 513
Gender identity
development of in adolescence, 513
development of in early childhood, 327–
theories on development of, 328–
Gender identity disorder, 513
Gender intensification, 513
Gender roles, 225, 327–
Gender schema, 330
Gender-
Gene disorders, 91–
Gene-
Generational forgetting, 537
Generational loyalty, 519
Generativity vs. stagnation, 556t
Genes. See also Chromosomes; DNA (deoxyribonucleic acid)
additive heredity and, 81–
alcoholism and, 85–
behavioral impact of, 67–
biosocial growth affected by, 137
body weight affected by, 353
brain development affected by, 144
at conception, 96
control of temperament, 210, 211, 427
deactivation of X chromosome, 84
defined, 68
depression influenced by, 526
dominant-
duplication of, 74, 79
emotional development affected by, 209
expressive language influenced by, 294
eyesight affected by, 87–
gross motor development influenced by, 159
influence on teratogen effects, 115, 122, 132
number in humans, 68, 72, 81, 96
parenting style influences by, 326
personality and intellect influenced by, 417
race and, 13
risky behavior affected by, 515–
selective adaptation, 58–
senses affected by, 152
start of puberty influenced by, 450, 456
structure of, 70p
variations in, 69–
Genetic code, 68–
Genetic counseling and testing, 92–
Genetic disorders. See also specific disorder
copy number variations causing, 83–
deaths due to, 348
dominant-
early detection of, 75
recessive-
trisomy disorders, 89–
types of, 93p, 96
Genetics. See Genes; Heredity
Genital herpes, 470
Genital stage, 40–
Genome, 70, 73
Genotype, 70, 73, 79–
German measles, 116t
Germany
breastfeeding statistics, 63
international test scores, 396
low birth weight newborns, 124t
math learning, 285
paid maternal and paternity leave in, 232, 232t
sex selection in, 73
single-
stranger wariness and separation anxiety in infants in, 206
Germinal period
defined, 100, 106, 132
implantation, 101, 101f
teratogen exposure, 113
vulnerability during, 101t
Gerstmann-
Gesturing, 188–
Ghana, 392, 420
Ghosts in the nursery, 141, 227
Gifted children, 371–
Glancing, 380
GnRH (gonadotropin-
Golden hour, 265
Gonadotropin-
Gonads, 447
Gonorrhea, 116t, 470
Good behavior, 336–
Goodness of fit, 212
Grabbing, 158, 169, 183p, 316p, 320p
Graduation rates, 502f
Grammar acquisition, 191, 200, 293–
Grandmothers, 229p, 230, 232, 272
Grandparent with no parent, 419, 420, 420t, 425
Grandparents, 229, 230, 232, 272
Grasping reflex, 126, 126p, 158, 172
Gray matter maturation, 462
Great Britain. See England; United Kingdom
Greece, 226
Grimace response, 126, 126p
Grit, 391
Gross motor skills
development during infancy, 156–
development in early childhood, 254–
norms, 156t
Group identity, 313, 317
Growth patterns
in adolescence, 445–
in early childhood, 241–
in infancy, 138–
in middle childhood, 348
nutrition and, 456–
throughout life, 16f
Growth spurt, 456–
Guatemala, 232t
Guided participation, 52–
Guilt
development in early childhood, 333, 412
Erikson’s view of, 41–
as means of discipline, 339–
protection from in early childhood, 312
Habits, 19, 22, 34
Habituation, 179, 180, 181
Hair, 103, 457, 466. See also Facial hair
Haiti, 124t
Hand skills, 158
Happiness, 464, 558, 561
Hard-
Harm reduction, 263–
Harm to fetus, 112–
Harmony, 418–
Hawaiians, 31
Head circumference, 142, 169
Head Start, 303p, 309, 340
Head-
Health habits, 348, 351, 496, 545
Hearing
of fetus, 105, 105p
in infancy, 153, 160, 169
Hearing impairment
brain development and, 151
early detection of, 189
percent of children with, 370
Heart, 102, 132
Heart disease, 545t
Heartbeat of fetus, 103, 104, 105
Height
adolescence growth spurt, 456–
growth in early childhood, 241
growth in first two years, 138, 142, 169
growth in middle childhood, 348
Helicopter parents, 562
Hemophilia, 91
Herbal medicines, 115
Herbicides, 116t
Herd immunity, 164, 168
Heredity. See also Chromosomes; DNA (deoxyribonucleic acid); Genes; Genetic disorders
alcoholism and, 85–
eyesight affected by, 87–
impact on development, 1
Heredity-
Heritability, 87
Heritage, 12
Heroin, 117t, 532
Heterozygous gene pairs, 71
Hiccups, 127
Hidden curriculum, 394–
Hide-
Hierarchy of needs, 55–
High school, 500–
Higher cognitive functions, 146
High/Scope, 304
High-
Hippocampus
alcohol’s effect on, 535
functions of, 246, 251, 252f, 254
socioeconomic status related to development of, 389
stress and fear affecting development of, 209, 213
Hispanic Americans
age of start of puberty, 451, 457
autism among, 367
childhood obesity, 353, 459
peer relationships and, 520
population of, 31
sexual activity among adolescents, 467
treatment of ADHD, 364
Hispanic paradox, 123
Historical change, 20
HIV/AIDS
breastfeeding and, 165–
genetic immunity to, 59, 92
prevention of, 471
risk to fetus, 116t
spread of, 546
Holland, 163, 477
Holophrase, 189, 191–
Home, 298–
Home birth, 110–
Home schooling, 53, 53p, 401, 402, 406
Homeostasis, 544, 545
Homicide, 548
Homosexuality. See LGBT teenagers; Same-
SI-
Homozygous gene pairs, 70
Hong Kong, 140, 396, 504
Hook-
Hormonal feedback loop, 252f
Hormones. See also Androgens;
Cortisol; Estrogens;
Hypothalamus-
adrenal (HPA) axis;
Hypothalamus-
gonad (HPG) axis;
Oxytocin; Pituitary gland;
Testosterone
defined, 446
depression and, 526
during puberty, 445, 446–
sex hormones, 447
sexual maturation and, 467
Housewives, 513
HPA axis, 209, 252, 252f, 446, 447, 447f, 456, 470, 488
HPG axis, 447
Hubs of the brain, 356
Human development, 99. See also
Biosocial development;
Cognitive development;
Development; Psychosocial
development
Human genome, 96
Human Genome Project, 81
Human papillomavirus (HPV), 471
Humanism
application to infant psychosocial development, 227–
concepts of, 38, 55–
on gender identity in early childhood, 331, 342
Hunting accidents, 477p
Huntington disease, 91, 95
Hybrid theory of language learning, 197–
Hygiene hypothesis, 355
Hyperactivity, 112, 258. See also Attention deficit/hyperactivity disorder (ADHD)
Hypothalamus
connections to amygdala, 356
effects of cortisol on, 251–
functions of, 246, 251, 254, 448
sexual abuse and, 470
stress and fear affecting development of, 209
Hypothalamus-
link to prefrontal cortex, 488
role in puberty, 446, 447, 456
sexual abuse and, 470
structures and function of, 252, 252f
Hypothalamus-
Hypothesis, 4, 38
Hypothetical thought, 479–
IB (International Baccalaureate) test, 500
Iceland, 232, 232t, 419f, 551t
Identical twins. See Monozygotic (MZ) twins
Identification, 328
Identity
arenas of, 511–
formation in adolescence, 509–
formation in emerging adulthood, 556–
Identity achievement, 510, 539, 556–
Identity crisis, 42p
Identity diffusion, 510
Identity foreclosure, 510, 539
Identity vs. role confusion, 41–
Imaginary audience, 477–
Imaginary friends, 314
Imagination, 177, 180, 277
Immediate motivation, 181
Immersion teaching, 388
Immigrant paradox, 123
Immigrants
delinquency and, 531
diet of, 354
expectations for children’s education, 390
nutrition of, 242
peer relationships, 520
Immune system, 355
Immunizations
benefits of, 164–
for human papillomavirus, 471
opposition to, 29–
Impatience, 315
Implantation, 101, 101f, 106, 132
Impulse control
in early childhood, 249, 250, 254
injuries associated with lack of, 262
reaction time enabling, 357
Impulsivity, 249, 254, 488, 488f
in vitro fertilization (IVF), 72–
Inclusion class, 369
Income, 551, 552f, 555, 563
Incremental theory of intelligence, 499
Independent variable, 24
India
acceptance of gays, 523
addiction to computer use in, 492
breastfeeding statistics, 63
couvade in, 129
c-
education in, 299, 496
family function in, 427
infant mortality rate, 161
injuries to children in, 262
low birth weight newborns, 123, 124t
official languages of, 295
sex selection in, 72
Individual education plan (IEP), 370, 374
Indonesia
adolescent smoking in, 534
co-
international test scores, 396, 502
paid maternal and paternity leave in, 232, 232t
view of crawling in, 160
Induction, 340, 341, 342
Inductive reasoning, 480, 480f, 483, 483f
Indulgent parenting, 324
Industry vs. inferiority, 41–
Infancy (first two years). See also Toddlers
allocare, 229–
biosocial development, 137–
body changes, 138–
brain development, 142–
cascade of learning during, 171–
changes during, 135
cognitive development, 171–
colic in, 6–
consistency in care, 233–
co-
day care during, 230–
development of social bonds, 213–
effects of stress, 209
emotional development, 204–
extensive medical treatment, 110–
harm to brain, 149–
immunizations, 164–
information-
language acquisition, 186–
learning about others, 208–
moral awareness during, 333
motor skills, 156–
oral stage of social development, 40–
physical changes, 139p
Piaget’s stages of cognitive development, 172–
psychosocial development, 203–
role of father, 203, 221–
senses, 152–
sensorimotor intelligence, 47–
SIDS, 162–
sleep patterns, 138–
social referencing, 221
survival in good health, 161–
synesthesia, 209–
temperament, 210–
theories of infant psychosocial development, 224–
trust vs. mistrust stage, 41–
types of infants, 210–
Infant amnesia, 184, 186, 200
Infant care seats, 263
Infant day care, 230–
Infant mortality rates, 109–
Infanticide, 58
Infections. See also HIV/AIDS; Sexually transmitted infections (STIs)
immunizations and, 164–
risk to fetus, 116t
Inferiority, 41–
Infertility, 78
Influenza, 116t
Informal linguistic code, 387, 391
Information-
affordance in first two years, 181–
application to middle childhood, 381–
concepts of, 48–
on control processes, 384–
infant cognitive development, 180–
on knowledge, 383–
on language learning, 388, 389
on memory, 183–
teacher-
Informed consent, 32, 33
Inhalants, 532, 533p
Inhaled solvents, 117t
Initiative vs. guilt, 41–
Injuries
age-
avoidable injury, 262
control of, 263–
in early childhood, 261–
prevention of, 263, 264–
sports injuries, 457
Injury control, 263–
Innate vulnerability, 115
Innovation, 314
Insecure attachment (Type A and C), 217–
Insecure-
Insecure-
Instagram, 478, 560
Instinct to protect young, 58
Institutional Review Board (IRB), 30, 32, 34
Instrumental aggression, 335, 336
Instrumental conditioning, 44–
Integrity, 32–
Integrity vs. despair, 556t
SI-
Intellectual disability, 370
Intelligence (g), 358, 359–
Interactionist perspective, 331–
Interdependence, 558
Internalizing problems, 316–
International Baccalaureate test (IB), 500
International tests
gender differences in school performance, 397–
national and state differences, 395–
problems with benchmarks, 397
Internet. See also Social media
adolescents’ use of, 490, 506
availability of, 489
cyber danger, 493–
dangers of, 493p, 494p, 506
reduction of isolation, 490, 492, 495, 521
sex education from, 524
sexual abuse through, 491
teachers’ use of, 491
Internet sources, 118
Interpersonal intelligence, 359
Intervention, 150–
Intimacy vs. isolation, 41–
Intonation, 189
Intra-
Intrapersonal intelligence, 359
Intrinsic motivation, 314
Intuition versus analysis, 482–
Intuitive thought, 482, 483, 483f, 488, 489, 506, 548–
Intuitive versus analysis, 483f
Invincibility fable, 477, 481, 506
IQ, 146–
IQ tests, 358, 358f, 359, 361, 374
Iran, 315, 396
IRB (Institutional Review Boards), 30, 32
Ireland, 115, 396, 551t, 561
Iron, 458
Irrationality, 482
Irreversibility, 279
Isolation, 41–
Israel, 141, 231, 396, 551t
Italian language, 191
Italy, 124t, 393, 396, 551t, 561
IVF (in vitro fertilization). See In vitro fertilization (IVF)
Ivory Coast, 160
Jacob’s syndrome, 90, 90t
Jamaica, 124t, 160, 560
Japan
breastfeeding statistics, 63
cohabitation in, 560
college graduates in, 551t
co-
high-
international test scores, 396, 502
low birth weight newborns, 124t
neonatal care, 103
paid maternal and paternity leave in, 232, 232t
recess in schools, 351
regulation of selfishness in, 315
response to alcohol, 86
schooling in, 393
single-
sleep patterns of infants, 139
sound preference of infants, 190
stranger wariness and separation anxiety in infants in, 206
training of toddlers in, 225
twinning among, 77
view of pride in, 412
Jealousy, 206
Jokes, 386, 391
Jumping, 70
Juvenile delinquency, 259, 529–
Kangaroo care, 130–
Karyotype, 71, 71p
Kenya, 124t, 232, 232t, 254
Kinship care, 272
Klinefelter syndrome, 90t
Knowledge base, 383–
Kohlberg, Lawrence, 434–
Korea, 77, 225, 396, 403
Korean language, 191
Kwashiorkor, 167, 169
Labor and delivery, 110p, 111p
Laboratory test, false results, 120
Lactose intolerance, 59
Language
effect on math learning, 285
as a tool for advancing thinking, 284–
as tools for learning, 308
Language acquisition
behaviorist theory, 193–
brain maturation associated with, 179
differences in, 389–
in early childhood, 290–
evolutionary theory, 196–
fast-
grammar acquisition, 293–
hybrid theory, 197–
in infancy, 153, 186–
learning two languages, 295–
listening, talking, reading, 297
loss and gains, 296–
in middle childhood, 386–
milestones, 192
norms, 291
preoperational intelligence aiding, 291–
sensitive period for, 17, 151, 291–
social-
universal sequence of, 187–
use of first-
vocabulary, 386–
vocabulary explosion, 292–
words and limits of logic, 293
Language acquisition device (LAD), 197, 200
Language enhancement, 297
Language explosion, 278, 297
Language impairment, 370
Language shift, 296, 297
Latency of middle childhood, 40–
Lateralization, 247, 254
Latin America
center-
childhood obesity in, 243, 459
co-
c-
discipline of children in, 337
malnutrition in, 167, 168t
schooling in, 393
special education in, 371
Latinos
AP test scores, 500
asthma cases, 355
diet of, 354
education and, 304, 497, 498
ethnic pride and self-
height of children, 242
norms for walking, 159
parenting style, 326
sexual activity among adolescents, 467
style of reading to children, 283
Laughter
development of in infancy, 204, 206, 207–
in early childhood, 248
as survival technique, 228
LBW (low birth weight), 132
Lead
concentration in children age 6 and under in U.S., 259f
effect on the brain, 257, 258, 258p, 531
risk to fetus, 116t
Learning. See also Education; Math learning; Reading; Social learning
during adolescence, 496–
cultural effect on, 380p, 382p
during middle childhood, 377, 392–
as need of middle childhood, 418
pathways for, 144, 285p
Learning disabilities. See also Special needs in middle childhood
causes of, 251–
failure on high-
math learning and, 366
plumbism causing, 258
special education for, 369–
teratogens causing, 112
types of, 189, 366, 370
Learning styles, 53
Learning theory, 42–
Least restrictive environment (LRE), 369
Lebanon, 232t
Left-
Left-
Legs, 102, 106
Length of pregnancy, defined, 100
Leptin, 452–
Levels of moral thought, 434–
LGBT teenagers, 10
Life expectancy, 14
Life-
Limbic system
in adolescence, 463–
development of, 487–
drug use and, 537
in early childhood, 250–
emotional regulation, 312
intuitive and analytical thought and, 482
maturation of, 462
myelination of, 313
parts of, 246
Linguistic codes, 387
Linguistic intelligence, 359
Linguistic memory, 185
Linked lives, 561
Listening and responding, 187–
Listening reflex, 172
Literacy, predictors of, 297
Lithium, 116t
Little Albert research, 32
Little scientists, 176, 177, 180, 200, 221
Logic
adolescents’ self-
of early childhood, 278–
words and limits of, 293
Logical extension, 293
Logical fallacies, 480–
Logical-
Loneliness, 80
Longitudinal research, 25, 25f, 26–
Long-
Love and belonging, 55–
Low birth weight (LBW), 122–
Lungs, 104, 106, 132
Lying, 288, 288f, 290
Lymphoid system, 457
Macrosystems, 18–
Madagascar, 232, 232t
Magazines, sex education through, 524
Mainstreaming, 369
Making interesting sights last stage, 172, 174
SI-
Malaysia, 140
Male karyotype, 71
Malnutrition
consequences of, 167–
in early childhood, 242
effect on birth weight, 122
puberty affected by, 450
rates in various nations, 168t
risk to fetus, 116t
Maltreatment of children. See also Child abuse; Child neglect; Shaken baby syndrome
accuracy of data, 268–
consequences of, 269–
defined, 266
effect on attachment to infants, 221
effect on the brain, 209, 213, 235, 253
frequency of, 268
prevention of, 270–
rates in U.S., 267f
sexual abuse related to, 470
shared parenting reducing incidence of, 424
substantiated maltreatment in U.S., 268f
in United States, 266–
victims, 267p
warning signs, 269, 269t
Mandated reporters, 267, 271
Manners, 19p
Marasmus, 167, 169
Marijuana
attitudes toward, 19–
support for legalization, 20f
as teratogen, 114, 117t
use during adolescence, 533, 533f, 535, 539
Marriage, 60–
Maslow, Abraham, 55–
Massage, 159
Massification, 551
Massive open online courses (MOOCs), 553–
Mastery motivation, 499
Maternal death, 110
Maternal diet, 1
Maternal drug use, 122
Maternal education
educational achievement of children related to, 380, 389, 389f
fertility rate related to, 161–
malnutrition of infants related to, 168
Maternity leave, 231, 232, 232t, 234
Math learning
adjustments for formal operational thought, 478
concrete operational thought contributing to, 378–
curriculum differences, 393, 396
information-
learning disabilities causing problems with, 366
in middle childhood, 404f
norms and expectations, 393t
social context influencing, 380, 396p
Maturation, 172
Maturation-
Mauritania, 124t
Mean length of utterance (MLU), 192
Meaningful noises, 187
Means to an end stage, 174–
Measles, 116t, 164, 169
Media
reporting on teen suicide, 529
sex education through, 524, 526
Medial prefrontal cortex, 208
Medical checkups, 138, 169
Memory
advances from infancy to age 11, 383, 383t
of infants, 183–
long-
reminders and repetition affecting, 185
role of stress in, 252–
sensory memory, 382, 385, 406
working memory, 382, 385, 406
Menarche, 445, 445–
Mental combination stage, 172, 176–
Mental illness, 60. See also Psychopathology
Mentors
learning in early childhood affected by, 52–
scaffolding language acquisition, 293
Mercury, 116t, 118
Mesosystem, 18f, 19, 19f
Meta-
Metacognition, 384, 385
Metaphors, 386–
Meth, 119
Methylation, 68, 85, 208
Mexican Americans, 283, 354, 355, 451, 455. See also Hispanic Americans; Latinos
Mexico
college graduates in, 551t
c-
infant mortality rate, 161
language shift in, 296
paid maternal and paternity leave in, 232t
regulation of defiance in, 315
Microbiome, 168
Microsystems, 17–
Midbrain, 142–
Middle childhood (6 to 11)
biosocial development, 347–
brain development, 356–
cognitive development, 377–
developmental psychopathology, 361–
family structure and function, 416–
growth during, 348
health habits of, 348–
health problems of, 351–
as a healthy time, 348, 351, 374
industry vs. inferiority stage, 41–
joys and problems of, 345, 347
language acquisition, 386–
latency stage of social development, 40–
learning during, 392–
moral value development, 434–
nature of the child, 409–
needs from family, 418–
oral health during, 348
peer group during, 429–
physical activity during, 349–
psychosocial development, 409–
special education, 369–
theories of cognitive development, 377–
Middle East, 168, 168t, 532–
Middle school, 497–
Midwives, 99, 108, 110–
Military children, 419
Mind, 358–
Minority groups, 520. See also
African Americans; Asian
Americans; Hispanic
Americans; Latinos;
Mexican Americans
Miracle babies, 110–
Mirror/rouge test, 207, 235
Miscarriage, 89, 469
Mistrust, 41–
Modeling, 45–
Modern traditionalism, 559
Monozygotic (MZ) twins, 75–
Montessori, Maria, 300
Montessori schools, 300, 307, 309
MOOCs (massive open online courses), 553–
Moodiness, 315
Moral development
in adolescence, 464–
children’s values vs. adults,’ 436–
discipline, 337–
in early childhood, 328, 332–
empathy and antipathy, 334–
good behavior, 336–
Kohlberg’s levels of moral thought, 434–
moral values, 438f
nature-
Moral reasoning, 434–
Moral values, 434–
Morality, 332–
Moratorium, 510, 539
Moro reflex, 127
Morocco, 396
Morula, 74
Mosaicism, 89
Mother-
bonding, 130–
during pregnancy, 104–
Motherese, 188
Mothers. See also Attachment; Maternal education; Parents
bonding, 130–
fetal development affected by, 1
following birth, 127, 128, 132
needs of, 227–
Motion, 159
Motivation, 314–
Motor area of brain, 246–
Motor memory, 185
Motor skills
development during infancy, 156–
development in early childhood, 254–
development of in middle childhood, 349
Motor-
Mouth, 102, 132
Mouth skills, 158
Movement, 359
Mozart, Amadeus, 371
Multiethnic Americans, 31
Multifactorial traits, 81
Multifinality, 362
Multiple births, 76f, 79. See also Dizygotic (DZ) twins; Monozygotic (MZ) twins
Multiple intelligences, 359–
Multiple sclerosis, 85
Mumps, 164
Muscle development, 457
Muscle tone of newborns, 126
Music, 190p, 191, 261, 372
Musical intelligence, 359
Muslims, 383
My Baby Can Read, 195
Myelin, 144, 246
Myelination
in adolescence, 462
in early childhood, 246, 247p, 248, 254, 259, 274
of limbic system, 313
processing speed determined by, 143, 356, 357
Myopia, 86–
NAEP (National Assessment of Educational Progress), 399, 406
Names, popularity of, 19t
Naming explosion, 187, 190, 192, 200
Narcotics, 118
National Assessment of Educational Progress (NAEP), 399, 406
SI-
Native Americans, 31, 315, 527, 527p
Naturalistic intelligence, 359
Nature, 5, 333–
Nature of the child, 439
Nature-
about moral development, 333–
case study of, 21
defined, 5, 34
Nature-
in alcoholism, 85–
in biosocial development, 137
differential susceptibility, 6–
in nearsightedness, 86–
on risky behaviors, 515–
NBAS (Brazelton Neonatal Behavioral Assessment Scale), 127
NCLB (No Child Left Behind Act, 2001), 399, 405, 406, 412
Nearsightedness, 86–
Negative correlation, 28
Negative identity, 510
Negative mood, 211
Neglected children, 431, 432
Neglectful/uninvolved parenting, 324, 333, 342, 515
Neighborhood games, 349–
Neocortex, 143
Netherlands, 110, 315, 396, 530
Neural tube, 102
Neural tube defects, 115
Neurodiversity, 368
Neurogenesis, 103
Neurological problems, 123
Neurons
changes with remembered experiences, 186
communication between, 143, 144, 145
defined, 142
development of in infancy, 144f
kinds of impulses, 249
myelination of, 246–
prenatal development of, 104
prenatal proliferation of, 142
pruning, 104, 142, 144, 145, 146, 151, 245
structure of, 145f
Neuroticism, 212
Neurotransmitters, 143, 144, 144f
New adaptation and anticipation stage, 174–
New family
couvade, 129, 132
family bonding, 130–
new fathers, 127–
new mothers, 127, 132
newborns, 4p, 104p, 125–
parental alliance, 129–
New Guinea, 129
New means through active experimentation stage, 172, 176
New York Longitudinal Study (NYLS), 210–
New Zealand
co-
early childhood education in, 305
international test scores, 396
legal age for alcohol purchases in, 535
paid maternal and paternity leave in, 232, 232t
sleep patterns of infants, 139
Newborns
Apgar score, 132
bonding, 130–
characteristics of, 125–
face recognition, 148
first minutes of life, 4p, 104p, 106–
low birth weight, 89, 122–
reflexes of, 126, 127, 156
sleep patterns, 139
survival rates, 109–
Niger, 167, 168
Nigeria
breastfeeding statistics, 63
c-
family structure in, 423, 423t
low birth weight newborns, 124t
twinning in, 77
No Child Left Behind Act (NCLB, 2001), 399, 405, 406, 412
Non-
Non-
Nonshared environment, 416–
Norms
defined, 39
for emerging adulthood, 543t
for emotional development, 204t
fact vs., 39
for fine motor skills, 159t
for gross motor skills, 156t
language acquisition, 187t, 291t
for motor skills, 255t
for reading and math learning, 393t
stages of attachment, 215t
theory vs., 39, 64
North Africa, 168, 168t
North America. See also Canada; Mexico; United States
characteristics encouraged in, 312
discipline of children in, 340
language acquisition in, 191
malnutrition in, 168, 168t
Northern Ireland, 396
Norway
center-
college graduates in, 551t
early childhood education in, 298, 302
education in, 499
efforts to halt bullying in, 433
low birth weight newborns, 124t
sexual activity among adolescents in, 467
Nose, 102, 132
Not attending status, 380
Nuclear family, 419, 420, 420t, 422, 424, 426–
Nurture
alcoholism and nearsightedness affected by, 87–
behavioral impact of, 67–
biosocial growth affected by, 137
brain development affected by, 144, 208–
cognitive development affected by, 172
defined, 5
diversity within species and, 70
emotional development influenced by, 208–
phenotype influenced by, 96
receptive language influenced by, 294
role in moral development, 333–
temperament affected by, 211–
Nutrition
in adolescence, 459p
diet deficiencies in adolescents, 457–
in early childhood, 242–
infant health and, 165–
Obesity
in childhood, 242–
diseases related to, 545
as eating disorder, 460
sexual abuse related to, 470
survival techniques associated with, 154
Object permanence, 175–
Observational learning, 44p, 45
Observations, 23
Odds ratio, 22, 22t
Oedipus complex, 328
Oklahoma, 119
On Becoming a Person (Rogers), 55
Onlooker play, 320
On-
Openness, 212
Operant conditioning, 44–
Operational thought, 377–
Opioids, 118
Opposing perspectives
algebra at 7 a.m.? get real! (adolescent sleep patterns), 449–
e-
language and video, 195
spanking, 338–
testing, 501–
toilet training, 50–
too many boys? 72–
using the word “race,” 13
“what do people live to do?,” 120–
where should babies sleep? 142–
Oral fixation, 225
Oral health, 348
in young children, 244, 245, 274
Oral stage of infant social development, 40–
Ordinary magic, 413
Organ growth, 457
Organ reserve, 544–
Organ systems, 104, 106, 132
Orthopedic impairment, 370
Osteoporosis, 458
Outdoor play, 87–
Ovaries, 447, 451, 465
Overimitation, 283–
Overregularization, 294, 297
Over-
Ovum, 101
Own-
Oxytocin
bonding influenced by, 229
morality influenced by, 333
released in labor, 106
temperament affected by, 251
OxyContin, 533f
Pacific nations, 168, 168t
Paid family leave, 231
Pain in infancy, 155, 155p
Pakistan, 123
Palmar grasping reflex, 127
Paraguay, 160
Parallel play, 320
Parasuicide, 528, 528f, 532
Parent education, 297
Parental alliance, 129–
Parental imprinting, 84–
Parental monitoring, 517–
Parental reactions, 140–
Parent-
in adolescence, 495, 498, 513p, 514–
in emerging adulthood, 561–
in middle childhood, 410
Parentification of children, 415, 426
Parent-
Parenting
of adolescents, 509, 515–
Baumrind’s styles of caregiving, 324–
cultural influences on, 326–
favoritism and, 417–
gender role changes, 513
helicopter parents, 562
onset of puberty influenced by, 454
styles of, 324, 333, 342, 390, 515
Parents. See also Fathers; Mothers
influence on identity formation, 511, 512
in the military, 419
needs of, 227–
personality and intellect influenced by, 417
relationships with adolescents, 495, 498, 513p, 514–
relationships with young adult children, 561–
role in education, 400–
sex education from, 524, 526
Parochial schools, 401, 402
Parten, Mildred, 320
SI-
Parts of speech, 191
Paternal care, 1
Paternity leave, 231, 232
Pavlov, Ivan, 43–
PCBs, 116t
Pedestrian deaths, 265f
Peek-
Peer group in middle childhood
bullies and victims, 431–
culture of children, 429, 439
friendships, 430, 433
moral alignment with, 436–
popular and unpopular children, 430–
Peer pressure, 520–
Peer relationships. See also Friendships
in adolescence, 499, 539
in early childhood, 319
influence on identity formation, 511
as need in middle childhood, 418
parents’ views of, 519
sex education from, 524, 526
texting and email maintaining, 490, 492, 495, 521
Penis, 446, 465
People preference, 183
Percentile, 138
Perception
defined, 152, 181, 382
in infancy, 152–
interplay with sensations and cognition, 173, 180, 384p
Permanency planning, 271–
Permissive parenting, 324, 333, 342
Perry, 304
Perseveration, 249–
Personal fables, 477, 478, 481, 506
Personal motivation, 384
Personality, 210, 557–
Peru, 502
Pester power, 353
Pesticides, 116t, 117–
PET (positron emission tomography) scan, 178, 178p
Phallic stage, 40–
Phallus, 328
Phase delay, 448
Phenobarbital, 116t
Phenotype, 73, 79–
Philippines, 123, 140, 232, 232t
Phobias, 313
Phthalates, 452
Physical activity. See also Sports
homeostatic responses to, 545
during middle childhood, 87p, 349–
of newborns, 126, 127
puberty affected by, 452
risk to fetus when excessive, 116t
in schools, 350–
Physical bullying, 431
Physical characteristics, 12
Physical necessities, 418
Physical punishment, 223f, 337–
Physiological needs, 55–
Piaget, Jean
cognitive theory, 46–
concrete operational thought, 483
concrete operational thought of school-
experiment of, 479f
experiments of, 478
formal operational thought, 478–
on infants, 200
influence on child-
on language development, 386
photograph of, 47p
preoperational intelligence of early childhood, 277–
stages of development, 47p, 48f, 152, 172–
Picasso, Pablo, 371
Pincer movement, 158
PIRLS (Progress in International
Reading and Literacy
Study), 395–
405, 406, 502, 504
PISA (Programme for International Student Assessment), 406, 502, 504, 506
Pituitary gland, 246, 252f
Placenta, 75, 96, 101, 107
Planning, 357
Plasticity
autism spectrum disorder and, 21
of brain, 59, 144, 148, 151, 248, 359
case study of, 21
defined, 20, 34
effects of, 22
effects of music, athletics, math learning, 372
of emerging adults, 558
Play
active play, 320–
cultural and cohort influences, 319–
drama and pretending, 321–
in early childhood, 317–
gender related, 321–
in middle childhood, 349–
playmates, 319
rough-
social play, 320, 323
sociodramatic play, 333
Play face, 321
Playmates, 319
Plumbism
concentration in children age 6 and under in U.S., 259f
effect on the brain, 257, 258, 258p, 531
risk to fetus, 116t
Pointing, 189, 189p
Poland, 161, 396, 502, 551t
Polio, 169
Political identity, 512, 512p
Political ideology, 81
Pollution
effect on young children, 256–
low birth weight newborns related to, 125
risk to the fetus, 116t
Polychlorinated biphenyls, 116t
Polygamous family, 420
Polygenic traits, 81, 85
Polymorphic genes, 69, 72–
Popular children, 430–
Popularity, 519–
Positive correlation, 28
Positron emission tomography (PET) scan, 178, 178p
Postconventional moral reasoning, 434–
Postformal thought, 548–
Postpartum depression, 128, 131, 132
Postpartum psychosis, 128
Post-
Practical guidance, 38
Prader-
Pragmatics, 294, 387, 391
Praise, 315
Prayer, 415–
Preattachment, 215
Precocious puberty, 452
Pre-
Preconventional moral reasoning, 434–
Prefrontal cortex
alcohol’s effect on, 535
development of, 321, 487–
development of control processes, 385
development of executive function, 289–
drug use and, 537
emotional regulation, 312
functions of, 143, 146, 246
of infants, 149
intuitive and analytical thought and, 482
maturation of, 248–
myelination of, 462
of young children, 245, 262
Pregnancy. See also Birth;
Embryonic period; Fetal
period; Germinal period;
Prenatal development
mother-
periods of, 100–
prenatal care, 120
preparation for, 113t
sexual abuse related to, 469
teratogens and, 112–
timing and terminology, 100, 100t
Prejudice, 484, 550
Premature birth. See Preterm delivery
Prenatal anxiety, 105
Prenatal care, 120
Prenatal development
of brain, 105f
embryonic period, 100, 102
fetal period, 100, 102
germinal period, 100–
last trimester, 103–
second trimester, 103
stages of, 99–
third month, 103
vulnerability during, 101, 101t
Preoperational intelligence
of early childhood, 47–
language acquisition aided by, 291–
language shifting and, 296
Preoperational stage, 49t
Preschool programs
child-
home and schools, 298–
Montessori schools, 300, 307, 309
in Peru, 313p
as predictor of future literacy, 297
Reggio Emilia, 300–
as source of intellectual stimulation, 379
teacher-
Preschool years. See Early childhood (two to six)
Prescription drugs, 532, 533f, 537
Pretending, 207, 317, 321–
Preterm delivery, 103–
Preterm newborns, 104p, 139
Pride
cultural influences on, 315
development of, 412
regulation of in China, 315
in toddlers, 206, 235
in young children, 312
Primary circular reactions, 172–
Primary education, 496, 506
Primary prevention
of injuries, 263, 264
of maltreatment of children, 270–
Primary sex characteristics, 465–
Primitive streak, 102
Private schools, 401, 402, 406
Private speech, 284, 313
Programme for International Student Assessment (PISA), 406, 502, 504, 506
Progress in International Reading and Literacy Study (PIRLS), 395–
Pronunciation, 158
Prosocial behavior
in early childhood, 334, 342
as learned behavior, 336
SI-
Prosopagnosia, 148
Prostitution, 546
Protective optimism, 312–
Protein production, 68, 69f
Protein-
Provocative victims, 432
Proximal parenting, 226
Proximity-
Proximo-
Pruning of brain connections
in early childhood, 245
in fetus, 104
in infancy, 142, 144, 145, 146, 151
Psychoactive drugs
threshold for fetal damage, 114
treatment of ADHD, 364
use and abuse of, 532–
Psychoanalytic theory
application to infant psychosocial development, 224–
on breast-
contributions of, 61
criticism of, 55, 61
defined, 38
on gender identity in early childhood, 328–
latency of middle childhood, 410–
stages of development, 40–
on toilet training, 50, 51
Psychological control, 339, 341, 342
Psychological disorders, 92–
Psychopathology
in adolescence, 446, 463
in early childhood, 316–
sex differences, 447
Psychosocial development
academic disciplines of, 7, 8
in adolescence, 509–
concepts of, 64
defined, 7f, 34
in early childhood, 311–
of emerging adults, 556–
emotional development, 204–
identity formation in adolescence, 509–
in infancy, 203–
in middle childhood, 409–
moral development, 332–
play, 317–
problems arising from early sexual activity, 469
theories of, 224–
Puberty. See also Adolescence
behavior problems, 497–
biological sequence of, 447
biorhythm changes, 447–
changes in eyes, 86
defined, 445
depression during, 526–
early and late onset, 453–
effect on the brain, 462
formal operational stage of development, 47–
genital stage of social development, 40–
hormonal changes, 446–
onset, 443, 445–
relationships during, 450p, 467p
sexual characteristics, 465–
stress’s effect on, 453–
Pubic hair, 445–
Public health initiatives
back to sleep campaign, 163
immunizations, 164–
infant mortality rates and, 161–
Public schools, 401, 403, 403f
Puerto Rico, 560
Pulse, 126
Puns, 386, 391
Pursuit of goals, 174–
Qatar, 502, 559
Quiet sleep, 140
Race, 11–
Racism, 13, 480, 550
Radiation, 116t
Raging, 204
Reaction time, 357, 359, 360, 361, 464
Reactive aggression, 335, 336
Reading
cultural differences in, 282–
curriculum differences, 393
learning, 357, 380, 404f
learning disabilities causing problems with, 366
norms and expectations, 393t
parental reading to children, 283p
by parents as predictor of future literacy, 297
parts of the brain used for, 356
Recall, 184
Receptive language, 146, 294
Recessive genes, 82–
Recessive-
Reflexes
accommodation and coordination of, 172
development of deliberate actions, 173–
of infants, 174p, 200
of newborns, 126, 126p, 127, 156, 158, 172, 180
Reflexive communication, 187, 192
Reflexive fear, 235
Reflux, 204
Refugees, 11p, 299p
Reggio Emilia, 300–
Reinforcement, 45
Rejected children, 434, 439
Relational aggression, 336
Relational bullying, 431
Relativism discovered thinking, 553t
Religion, 485–
Religious identity, 511, 511p, 539
REM (rapid eye movement) sleep, 139–
Reminder session, 185
Reminders, 185, 186
Repetition, 185, 200
Replication, 5, 22, 28, 33, 34
Reported maltreatment, 267
Reproduction, 58, 465, 545, 563
Reptiles, sex determination, 72
Research, 39
Research designs, 34
Research participants, 32, 33, 34
Resilience
of children, 391
divorce and, 421
dominant ideas about, 413t
stress and, 413–
Resource room, 369
Respiration, 126
Respondent conditioning, 43–
Response to intervention (RTI), 369–
Restitution, 437–
Retinoic acid, 116t
Retribution, 437–
Retrieval of memory, 185, 383
Rett syndrome, 367–
Reversibility, 281, 378
Rewards, 44, 314–
Ribonucleic acid (RNA), 68–
Risk analysis for teratogen exposure, 113, 122
Risky behavior
adolescent egocentrism and, 458p, 464p, 477, 481, 485, 487f, 520p
brain development and, 462–
in emerging adulthood, 545–
genetics and, 515–
Ritalin, 364, 533f
Robots, 482p
Rogers, Carl, 55–
Role confusion, 41–
Rolling over, 158, 169
Romance, 522–
Romanian adoptees, 219–
Rooting reflex, 127
Rough-
Rovee-
Rubella, 116t
Rubella immunization, 113
Rumination, 526–
Running speed during adolescence, 457, 457f
Russia, 396, 424
Rwanda, 63
Sadness. See also Depression
during adolescence, 526–
control of in early childhood, 312
in infancy, 204
in toddlers, 206
Safety, 55–
Same-
Same-
Same-
Saudi Arabia, 232t
Scaffolding
language acquisition, 293
learning in early childhood affected by, 282–
learning in school by, 379
Scandinavia, 319
Schizophrenia
causes of, 356
as complication of mumps, 164
genetic and environmental influences on, 69, 92–
sex differences, 447
Schooling. See Education
Schools. See also Education
atmosphere affecting learning, 497
child-
climate of affecting cyberbullying, 494
enrollment worldwide, 404f
Head Start, 303–
high school, 500–
middle school, 497–
Montessori schools, 300, 307, 309
Reggio Emilia, 300–
teacher-
childhood education, 299,
301–
307, 309
types of in United States, 400–
Science
approach of, 7–
as means of helping humankind, 33
need for, 5–
Science learning, 478
Science of human development
cautions and challenges from science, 28–
defined, 34
domains of, 7–
effects of time, 16–
importance of childhood and adulthood, 8–
inclusion of all kinds of people, 9–
as means of helping humankind, 33
nature-
as science, 4–
use of scientific method, 22–
Scientific method
case studies, 28
defined, 4–
experiments, 23–
observation, 23, 28
questions and answers, 38
SI-
replication of studies, 22, 28, 33, 34
research designs, 25–
statistical measures, 22
surveys, 24–
Scientific observation, 23, 28, 34
Scientific questions, 38
Screen time
addiction to computer use, 491–
childhood obesity related to, 353
effect on children, 195, 322–
effect on sleep patterns, 448
of U.S. children, 323f, 357p
Sculpting of brain pathways, 144
Second trimester, 103
Secondary circular reactions, 172, 172t, 173, 173f, 174–
Secondary education, 496–
Secondary prevention
of injuries, 263, 264–
of maltreatment of children, 271, 273
Secondary sex characteristics, 465–
Secondhand cigarette smoke, 257, 355
Section, 108–
Secular trend, 450, 452
Secure attachment (Type B), 216, 217–
Selective adaptation, 58–
Selective amnesia, 184, 184f
Selective attention, 357–
Self-
Self-
in adolescence, 445
development of in infancy, 208
development of in toddlerhood, 204, 206–
in early childhood, 312
Self-
Self-
development of in early childhood, 312–
development of in middle childhood, 411–
importance of during adolescence, 509
Self-
Self-
Self-
during adolescence, 526–
communication between parent and child’s effect on, 516
of early-
of emerging adults, 558
in middle childhood, 411–
peer relationships and, 520
sexual abuse and, 470
Self-
Self-
Selfishness, 315
Self-
Self-
Self-
Self-
Self-
Self-
Sensation seeking, 488, 488f. See also Risky behavior
Sensations
defined, 152
interplay with perception and cognition, 173, 180
retention of, 382
Senses, 152–
Sensitive periods
defined, 17, 22, 34
for face recognition, 148
for language learning, 291–
Sensorimotor intelligence
defined, 173, 180, 200
development of, 185p
stages five and six (tertiary circular reactions), 172, 172t, 173, 173f, 176–
stages one and two (primary circular reactions), 172–
stages three and four (secondary circular reactions), 172, 172t, 173, 173f, 174–
Sensorimotor stage, 47–
Sensory area of brain, 246–
Sensory awareness, 181
Sensory cortex, 144
Sensory deprivation, 150
Sensory memory, 382, 385, 406
Sensory register, 382
Separation anxiety
development of in infancy, 204, 205, 207, 235
as survival technique, 229
Seriation, 378
Serotonin, 208–
SES (socioeconomic status). See Socioeconomic status (SES)
Sex. See also Gender differences
becoming boys and girls, 327–
defined, 513
differences in internalizing and externalizing behavior, 316–
elimination of females in India, 72p
response to alcohol related to, 86
types of play influenced by, 322
Sex chromosomes
abnormal number of, 90–
growth patterns affected by, 450
influence on teratogen effects, 115
prenatal sexual development, 103
sex determination, 71–
Sex determination
choosing sex of zygote, 72–
sex chromosomes, 71–
SRY gene activation, 71–
Sex differences, 327
Sex education, 470p, 524–
Sex glands, 447
Sex hormones, 447, 452
Sexting, 494–
Sex-
Sexual, defined, 513
Sexual abuse
in adolescence, 446, 453, 469–
drug use and, 532
in early childhood, 267, 268, 469
Internet associated with, 491
Sexual activity
during adolescence, 466–
age of initial intercourse, 24f, 468
during emerging adulthood, 545, 546, 548
in United States, 466f
unsafe sex and drug use, 537
Sexual characteristics, 472
Sexual identity, 513–
Sexual maturation
sexual abuse, 469–
sexual activity, 466–
sexual characteristics, 465–
sexual problems in adolescence, 467–
Sexual organs, 103, 106
Sexual orientation, 10–
Sexual stereotypes, 327
Sexually transmitted infections (STIs)
during adolescence, 470–
bisexual sex and, 523
harm to fetus, 116t
increase in instance and outcome, 468
prevention of in adolescents, 524
risk of in emerging adulthood, 546
SGA. See Small for gestational age (SGA)
Shaken baby syndrome, 149–
Shame
development of, 412
Erikson’s view of, 41–
as means of discipline, 339
as means of emotional control, 315
protection from in early childhood, 312
in toddlers, 206, 235
Shared environment, 416–
Shivering, 127
Shoplifting, 531
Short-
Siamese twins. See Conjoined twins
Sickle-
SIDS (Sudden Infant Death Syndrome), 141, 162–
Sierra Leone, 124t, 414
Sight. See Vision
Sign language
acquisition of, 187, 196
first signs learned, 174, 188, 188p, 189, 196p
Significance, 22, 22t
Simulated driving game, 487f
Singapore, 396, 501, 502, 504
Single-
Single-
Sitting, 156, 169
Skin, 457
Skinner, B. F., 44–
Skin-
Skipped-
Skull, 104
Sleep
brain maturation associated with, 138
in infancy, 138–
patterns in early childhood, 248
Sleep deprivation, 138, 448–
Sleeper effect, 300
Slovakia, 455
Slow-
Slow-
Slow-
Small for gestational age (SGA), 122, 132
Small-
Smallpox, 164, 168, 169
Smart phones, 489–
Smell, 154–
Smile, 153, 204, 204p, 228, 235
Smoking
during adolescence, 522, 532–
educational level related to, 496
effect on birth weight, 114p, 122, 125
in emerging adulthood, 547, 548
harm to fetus, 114, 117t
national differences, 533–
risk of SIDS in infants, 163
Sneeze, 127
Social acceptance, 487–
Social anxiety, 209
Social awareness, 206, 208, 235
Social bonds. See also Friendships; Peer relationships; Romance
attachment, 215–
development of in infancy, 213–
synchrony, 213–
Social comparison, 411
Social connections, 490, 495, 558–
Social constructions, 11, 34
Social context. See also Culture
SI-
diagnosis and treatment of psychopathologies influenced by, 361
influence on children’s learning, 379, 385
language shift influenced by, 296
of learning, 281–
resilience affected by, 414
Social deprivation, 150–
Social exclusion, 349
Social interaction, 52
Social learning, 42–
Social learning theory, 45–
Social media
cyberbullying on, 493
emerging adults use of, 560
expansion of social circle, 492, 495, 518
reduction of isolation, 521
Social mediation, 284
Social networking. See Social media
Social play, 317, 319–
Social referencing, 221, 224, 229, 235
Social skills, 270
Social smile, 204, 207–
Social studies, 478
Social understanding, 245, 359, 367
Social-
Sociocultural theory
application to infant psychosocial development, 224
application to middle childhood, 379–
on breast-
concepts of, 38, 52–
contributions of, 61
criticism of, 61
on gender identity in early childhood, 330–
Sociodramatic play, 320–
Socioeconomic status (SES)
attachment affected by, 219
co-
defined, 14
difference-
educational level related to, 496, 551, 552, 555
effect on asthma rates, 257
effect on birth weight, 123
effect on brain development, 147
effect on motor skills development, 256–
family function and structure related to, 422, 427–
gap between rich and poor, 14f
health habits related to, 348–
influence on human development, 14, 15p, 34
intellectual stimulation related to, 379–
language acquisition affected by, 389–
obesity related to, 242
physical activity influenced by, 350
response in class influenced by, 395
school drop-
style of reading to children related to, 283
suicide rates and, 529
teen pregnancy related to, 469
Solitary play, 320
Sonogram, 103
South America, 533
South Asia, 123, 167, 168t, 231
South Korea, 124t, 502, 551t
Spain
birth rituals in, 129
college graduates in, 551t
international test scores, 396
paid maternal and paternity leave in, 232, 232t
schooling in, 393
Spanish language, 191
Spanking, 223, 223f, 337–
Spatial intelligence, 359
Special education
for children with learning disabilities, 369–
for gifted and talented children, 371–
Special needs in middle childhood
ADHD, 362–
autism spectrum disorder, 367–
diagnosis and treatment of, 361–
dyscalculia, 366
dysgraphia, 366
dyslexia, 366
gifted and talented children, 371–
percent by type, 370f
specific learning disorder, 365–
Specialization of brain, 143
Specific learning disorder, 365–
Speech impairment, 370
Speech production, 146
Speed of thought, 246–
Sperm, 101
Spermarche, 446, 451
Spina bifida, 115
Spinal cord, 246
Spiritual/existential intelligence, 359
Spitting, 158
Spontaneous abortion, 89, 469
Sports, 546–
Sports injuries, 457
Sri Lanka, 414
SRY gene activation, 71–
Stability, 418–
Stage of first habits, 172, 173–
Stage of reflexes, 172, 173–
Stages of cognitive development
primary circular reactions, 172–
secondary circular reactions, 172, 172t, 173, 173f
tertiary circular reactions, 172, 172t, 173, 173f
Stages of life, 25, 25p
Staring reflex, 172
Startling, 204
Static reasoning, 278–
Statistical measures, 22t
STEM (Science, Technology, Engineering and Math) learning, 284–
Stem cell research, 74–
Stem cells, 74, 74p, 79, 96
Step families, 421p
Stepparent families, 419, 420, 420t, 424–
Stepping reflex, 126, 126p, 127
Stereotype threat, 549p, 550, 563
Stereotypes, 248p, 549–
Stereotyping, 13
Sterility, 164
Steroids, 534
Stillbirth, 89, 469
Still-
Stimulation, 149, 151
Stimulus and response, 144
STIs (sexually transmitted infections). See Sexually transmitted infections (STIs)
Storage of memories, 383
Strange Situation, 216, 218, 235
Stranger danger, 521
Stranger wariness, 204, 205, 205p, 207, 210p, 235, 349
Streptomycin, 116t
Stress
cognitive coping, 39p, 415–
cumulative stress, 414–
effect on the brain, 149, 151, 209, 235, 251–
effects on fetus, 105, 116t, 118
resilience and, 413–
sexual abuse related to response to, 470
start of puberty influenced by, 453–
Stress hormones, 251–
Stroke, 545t
Stubbornness, 531
Stunting, 167, 168f, 169
Stuttering, 351
Sub-
Substantiated maltreatment, 267
Sucking reflex, 126, 126p, 127, 158–
Sudden Infant Death Syndrome (SIDS), 141, 162–
Sugar, 155, 243, 274
Suicidal ideation, 528–
Suicide
during adolescence, 528–
communication between parent and child’s effect on, 516
drug use associated with, 537
by emerging adults, 548
gay youth and, 10, 523
as result of cyberbullying, 493, 493p
sexual abuse related to, 469, 495
Sunk cost fallacy, 480–
Superego, 328–
Support, 516–
Surveys, 24, 28, 34
Survival, 58, 228–
Suspension from school, 44–
Sustained attention, 380, 381
Swallowing reflexes, 127, 173–
Sweden
center-
cohabitation in, 560
college graduates in, 551t
c-
early childhood education in, 298
early sexual maturation in, 455
international test scores, 396
low birth weight newborns, 124t
single-
Swimming reflex, 127
Switzerland, 295
Symbolic thought, 278, 290
Synapses, 143, 144, 144f, 146f, 207, 464–
Synaptic gap, 143, 144
Synaptogenesis, 103
Synchrony
with both partners active, 213–
defined, 213
evidence of, 224, 235
neglect of, 214–
as survival technique, 228, 229
Synesthesia, 159, 209–
Synthetic marijuana, 537
Syphillis in last stages, 116t
Taiwan, 140
Talented children, 371–
Tanzania, 232t
Taste, 154, 154p
Teacher-
Teacher-
Teaching
adolescents, 496–
child-
in elementary grades, 392–
sex education, 524–
Technology. See also Cell phones
adolescents’ use of, 506
cognition and, 490–
dangers of, 493–
reduction of isolation, 490, 492, 495, 521
use in education, 490–
Teen abortion rate, 468
Teen births, 468
Teen pregnancy, 468p
SI-
Teeth, 103, 348
Television
childhood obesity related to, 322–
effect on children, 352
sex education from, 524
Temper tantrums
in early childhood, 248, 250, 313
in toddlerhood, 206, 228
Temperament
caregivers affected by, 325
changes with age, 211–
emotional regulation influenced by, 312, 315
genetic influence on, 210, 213, 235
New York Longitudinal Study, 210–
permanence of, 557
Temperature, infants’ sensitivity to, 155
Teratogens
advice from doctors, 118
behavioral teratogens, 112, 132
birth defects due to, 114f
conflicting advice on, 117–
critical periods, 113
defined, 112, 132
fetal alcohol syndrome (FAS), 112p, 114
genetic influence on effects, 115
risk analysis, 113, 122
risk reduction, 115, 116t–
threshold effect, 114
use during pregnancy as a crime, 119
women’s responses to risks, 118–
Tertiary circular reactions, 172, 172t, 173, 173f, 176–
Tertiary education, 496, 506, 551–
Tertiary prevention
of injuries, 263, 264–
of maltreatment of children, 271, 273, 274
Testes, 446, 447, 451, 465
Testicles, 447
Testing, 500–
Testosterone, 103, 447, 451
Tetracycline, 116t
Texting
cyberbullying by, 493
reduction of isolation, 490p
sexting, 494–
socializing by, 387p, 490, 492, 495, 521
while driving, 464
Thailand, 140, 167
Thalamus, 246
Thalassemia, 91
Thalidomide, 17, 116t
Theoretical distribution of scores, 358f, 358fa
Theory
aspects of, 37
contributions of, 61–
defined, 4
functions of, 38–
norms and facts vs., 39, 64
Theory of mind
autism delaying development of, 367
development of, 287–
development of empathy associated with, 434
discipline’s effect and, 340
imaginative play advancing, 321
Montessori schools advancing, 300
physical punishment delaying, 339
social understanding development, 334, 335, 340, 341
Theory-
Thinking
during early childhood, 277–
of emerging adults, 548–
intuitive and analytical in adolescence, 482–
pathways for, 144
preoperational intelligence, 277–
social learning, 281–
speed of thought, 357, 359
Third month of pregnancy, 103
Third trimester, 103–
Thrashing reflex, 127
Threshold effect, 114
Time-
Time-
TIMSS (Trends in Math and Science Study), 395–
Tobacco. See Smoking
Toddlers. See also Infancy (first two years)
emotional development, 206–
self-
social referencing, 221, 224, 235
Toenails, 103
Toilet training, 50–
Top-
Touch, 155
Tourette syndrome, 351
Toward a Psychology of Being (Maslow), 55
Toxoplasmosis, 116t
Transfer deficit, 195
Transgender children, 332
Transient exuberance, 145
Transitional objects, 205
Transitional sleep, 140
Trends in Math and Science Study (TIMSS), 395–
Trimester, defined, 100
Triple X syndrome, 90, 90t
Trisomy, 89–
Trisomy-
Trust vs. mistrust, 41–
Tucking legs reflex, 127
Tummy time, 157, 163
Tunisia, 232, 232t
Turkey, 492, 551t
Turner syndrome, 90, 90t
Tuskegee study, 32
Tutors, 52–
Twins, 75–
Twitter, 478
Two-
Uganda, 217, 232t, 523
Ukraine, 63
Ultrasound, 103
Umbilical cord, 75, 107
Unconditional positive regard, 56–
Unfaithful mate, 60–
United Kingdom, 115, 124t, 140, 419f, 501, 551t
United States
abortion rate, 468
ADHD in, 363
asthma cases in, 354, 355
baby’s sleep location, 140
bilingual children in, 295, 387, 387f
breastfeeding statistics, 63
characteristics encouraged in, 312
child maltreatment in, 266–
childhood obesity in, 243, 353
childhood play in, 254
children’s screen time, 322–
cigarette smoking in, 533, 534
cohabitation in, 560, 561
college graduates in, 551t
c-
death of young children in, 261
discipline of children in, 337, 338
divorce rate in, 421
drug use by adolescents in, 534
education in, 371, 391, 393, 394, 398–
ethnic make-
family structures in, 419f, 420t, 423, 423f
graduation rates, 536f
Head Start program in, 303–
high-
homelessness in, 414
infant mortality rate, 109–
international test scores, 395, 396, 504
language shift in, 296
legalization of marijuana, 535
low birth weight newborns, 124, 124t
nearsightedness in, 87
number of pedestrian deaths, 265
nutritional deficiencies in, 243
official language of, 295
paid maternal and paternity leave in, 232, 232t
parent-
public school students, 403f
recess and gym class in schools, 350
regulation of fear in, 315
regulation of lead, 258–
school drop-
sex education in, 525–
sexual abuse in, 469
sexual activity among adolescents in, 467
SIDS in, 163
STI rates, 471
suicidal ideation and parasuicide of high school students, 528f
teen births in, 468, 469
teen pregnancy in, 525
training of toddlers in, 225
types of schools, 401f
Universal first words, 192
Universal grammar, 197
Universal sequence of language development
age of stages, 187, 192, 199, 200
babbling and gesturing, 188–
cultural differences, 190–
first words, 189–
grammar, 191, 193
listening and responding, 187–
naming explosion, 190
parts of speech, 191
Universal theories. See also Evolutionary theory; Humanism
application to psychosocial development of infants, 224
on breast-
concepts of, 55–
contributions of, 61
defined, 64
on gender identity in early childhood, 331, 342
Unmarried mothers, 420, 420t, 422
Unpopular children, 430–
Urbanization, 274
Uterus, 451, 465
Vaccinations. See Immunizations
Vagina, 451
Vanishing twin, 77
Vaping, 533, 534
Varanasi children, 380, 380p
Variables, 24
Varicella, 164
Venezuela, 232t
Ventral striatum, 487
Verbal bullying, 431
Very low birth weight (VLBW), 122, 132
Viability, age of, 103
Video games, 491–
Videos, 195, 322–
Vietnam, 63, 140
View from science
childhood obesity, 353–
conflicting advice, 117–
divorce, 421
eliminating lead, 258–
face recognition, 148, 148p
“I always dressed one in blue stuff.,” (parenting), 417–
SI-
mixed realities of center day care, 233
parents, genes, and risks, 515–
Piaget and modern research, 177–
stereotype threat, 550
stress and puberty, 453–
true grit (cognitive development), 391
unfaithful mate, 60–
vaccination and autism, 29–
witness to a crime, 289
Villi, 75
Vicodin, 533f
Violent behavior, 521
Vision
depth perception, 154, 160, 182
in infancy, 153–
nearsightedness, 86–
Visual cliff experiments, 182, 182p
Visual cortex
development of, 146
functions of, 143, 246
maturation of, 153
proliferation and pruning in infancy, 151
Visualizing development
breastfeeding diversity, 63f
developing attachment, 216f
developing motor skills, 255f
diverse complexities, 31f
early communication and language development, 192f
early-
education in middle childhood, 404f
family structure around the world, 423f
healthy newborn, 126f
multiple births, 76f
nature, nurture and the brain, 144f
play in early childhood, 318f
puberty, 457
thinking in adolescence, 483
Vitamin A, 114
VLBW (very low birth weight), 132
Vocabulary
adjusting to context, 387
bilingual education, 387–
understanding of metaphors and humor, 386–
Vocabulary explosion, 292–
Vocational identity, 512–
Voice change, 446, 451, 457, 466
Vouchers (for schooling), 402, 405
Vygotsky, Lev
influence on child-
photograph of, 52p
respect for children’s play, 317
sociocultural theory, 62, 64, 281–
zone of proximal development, 52–
Walking, 156, 157, 159–
Wasting, 167
Watson, John B., 42–
Weight. See also Childhood obesity; Obesity
growth in early childhood, 241
increase in first two years, 138, 142, 169
increase in middle childhood, 348
Western cultures
attachment to infants in, 217
expectation of toddlers, 225
synchrony in, 214
Western Europe, 168, 168t
Whistling, 158
White coat syndrome, 44
White matter, 246
Widow’s peak, 466
Wisdom, 359–
Withdrawn-
Working memory
defined, 382–
as essential for intelligence, 359, 361
Working model, 226, 230
World Health Organization, 108
X chromosome, 84, 96
X-
X-
X-
X-
XX chromosomes, 71–
XY chromosomes, 71–
Y chromosome, 96, 103, 115
Yemen, 124t, 396
Yorubas, 77
Zero correlation, 28
Zone of proximal development (ZPD), 52–
Zygote
defined, 68
duplication and cell division, 74, 79, 96, 101, 106
genetic composition of, 70, 73, 96
implantation, 101f, 132
vulnerability of, 101t