A stimulus that can direct behavior, thinking, and feeling.

A significant disturbance in the ability to respond sexually or to gain pleasure from sex.

A drive to control and influence others.

An eating disorder characterized by episodes of extreme overeating, during which a larger amount of food is consumed than most people would eat in a similar amount of time under similar circumstances.

Attraction to members of the same sex.

A psychological state that includes a subjective or inner experience, a physiological component, and a behavioral expression.

Complex behaviors that are fixed, unlearned, and consistent within a species.

A person’s enduring sexual interest in individuals of the same sex, opposite sex, or both sexes.

The tendency for bodies to maintain constant states through internal controls.

Framework or guidelines for when, how, and where an emotion is expressed.

Suggests that humans are born with the needs for competence, relatedness, and autonomy, which are always driving us in the direction of growth and optimal functioning.

An eating disorder identified by significant weight loss, an intense fear of being overweight, a false sense of body image, and a refusal to eat the proper amount of calories to achieve a healthy weight.

A state of tension that pushes us or motivates behaviors to meet a need.

Suggests that the experience of emotion is the result of physiological arousal and a cognitive label for this physiological state.

A powerful combination of extremely gratifying sensations and a series of rhythmic muscular contractions.

The drive or urge to continue a behavior because of external reinforcers.

Suggests that environmental stimuli are the starting point for emotions, and physiological or behavioral responses occur at the same time emotions are felt.

A drive to reach attainable and challenging goals, especially in the face of competition.

An interval of time during which a man cannot attain another orgasm.

Attraction to members of the opposite sex.

Physiological or psychological requirements that must be maintained at some baseline or constant state.

Suggests that homeostasis motivates us to meet biological needs.

The facial expression of an emotion can affect the experience of that emotion.

An eating disorder characterized by extreme overeating followed by purging, with serious health risks.

Diseases or illnesses transmitted through sexual activity.

The drive or urge to continue a behavior because of internal reinforcers.

Suggests that the appraisal or interpretation of interactions with surroundings causes an emotional reaction.

Suggests that a stimulus initiates the experience of a physiological and/or behavioral reaction, and this reaction leads to the feeling of an emotion.

Suggests that humans are motivated to seek an optimal level of arousal, or alertness and engagement in the world.

Attraction to members of both the same and opposite sex.

The need to be one’s best and strive for one’s fullest potential.

The stable weight that is maintained despite variability in exercise and food intake.

A continuum of needs that are universal and ordered in terms of the strength of their associated drives.

Sexual activities, attitudes, and behaviors.

An association established between a behavior and its consequences, which then motivates that behavior.