7.1 Basic Learning Concepts and Classical Conditioning

Please continue to the next section.

How Do We Learn?

learning the process of acquiring through experience new information or behaviors.

7-1 What is learning, and what are some basic forms of learning?

Psychologists define learning as the process of acquiring new and relatively enduring information or behaviors. By learning, we humans are able to adapt to our environments. We learn to expect and prepare for significant events such as food or pain (classical conditioning). We typically learn to repeat acts that bring rewards and avoid acts that bring unwanted results (operant conditioning). We learn new behaviors by observing events and watching others, and through language, we learn things we have neither experienced nor observed (cognitive learning). But how do we learn?

More than 200 years ago, philosophers John Locke and David Hume echoed Aristotle’s conclusion from 2000 years earlier: We learn by association. Our minds naturally connect events that occur in sequence. Suppose you see and smell freshly baked bread, eat some, and find it satisfying. The next time you see and smell fresh bread, you will expect that eating it will again be satisfying. So, too, with sounds. If you associate a sound with a frightening consequence, hearing the sound alone may trigger your fear. As one 4-year-old exclaimed after watching a TV character get mugged, “If I had heard that music, I wouldn’t have gone around the corner!” (Wells, 1981).

Learned associations often operate subtly:

Learned associations also feed our habitual behaviors (Wood et al., 2014). As we repeat behaviors in a given context—sleeping in a certain posture in bed, walking certain routes on campus, eating popcorn in a movie theater—the behaviors become associated with the contexts. Our next experience of the context then evokes our habitual response. Especially in times when our willpower is depleted, such as when we’re mentally fatigued, we tend to fall back on our habits (Neal et al., 2013). That’s true of both good habits (eating fruit) or bad (overindulging in alcohol), all of which get embodied in brain circuits (Graybiel & Smith, 2014).

How long does it take to form such habits? To find out, one British research team asked 96 university students to choose some healthy behavior (such as running before dinner or eating fruit with lunch), to do it daily for 84 days, and to record whether the behavior felt automatic (something they did without thinking and would find it hard not to do). On average, behaviors became habitual after about 66 days (Lally et al., 2010). Is there something you’d like to make a routine part of your life? Just do it every day for two months, or a bit longer for exercise, and you likely will find yourself with a new habit.

Other animals also learn by association. Disturbed by a squirt of water, the sea slug Aplysia protectively withdraws its gill. If the squirts continue, as happens naturally in choppy water, the withdrawal response diminishes. But if the sea slug repeatedly receives an electric shock just after being squirted, its response to the squirt instead grows stronger. The animal has associated the squirt with the impending shock.

281

associative learning learning that certain events occur together. The events may be two stimuli (as in classical conditioning) or a response and its consequences (as in operant conditioning).

Complex animals can learn to associate their own behavior with its outcomes. An aquarium seal will repeat behaviors, such as slapping and barking, that prompt people to toss it a herring.

By linking two events that occur close together, both animals are exhibiting associative learning. The sea slug associates the squirt with an impending shock; the seal associates slapping and barking with a herring treat. Each animal has learned something important to its survival: anticipating the immediate future.

This process of learning associations is conditioning. It takes two main forms:

Most of us would be unable to name the order of the songs on our favorite album or playlist. Yet, hearing the end of one piece cues (by association) an anticipation of the next. Likewise, when singing your national anthem, you associate the end of each line with the beginning of the next. (Pick a line out of the middle and notice how much harder it is to recall the previous line.)

To simplify, we will explore these two types of associative learning separately. Often, though, they occur together, as on one Japanese cattle ranch, where the clever rancher outfits his herd with electronic pagers which he calls from his cell phone. After a week of training, the animals learn to associate two stimuli—the beep on their pager and the arrival of food (classical conditioning). But they also learn to associate their hustling to the food trough with the pleasure of eating (operant conditioning), which simplifies the rancher’s work.

282

cognitive learning the acquisition of mental information, whether by observing events, by watching others, or through language.

Conditioning is not the only form of learning. Through cognitive learning, we acquire mental information that guides our behavior. Observational learning, one form of cognitive learning, lets us learn from others’ experiences. Chimpanzees, for example, sometimes learn behaviors merely by watching others perform them. If one animal sees another solve a puzzle and gain a food reward, the observer may perform the trick more quickly. So, too, in humans: We look and we learn.

Let’s look more closely now at classical conditioning.

RETRIEVAL PRACTICE

  • Why are habits, such as having something sweet with that cup of coffee, so hard to break?

Habits form when we repeat behaviors in a given context and, as a result, learn associations—often without our awareness. For example, we may have eaten a sweet pastry with a cup of coffee often enough to associate the flavor of the coffee with the treat, so that the cup of coffee alone just doesn’t seem right anymore!

Classical Conditioning

classical conditioning a type of learning in which one learns to link two or more stimuli and anticipate events.

7-2 What was behaviorism’s view of learning?

For many people, the name Ivan Pavlov (1849–1936) rings a bell. His early twentieth-century experiments—now psychology’s most famous research—are classics, and the phenomenon he explored we justly call classical conditioning.

behaviorism the view that psychology (1) should be an objective science that (2) studies behavior without reference to mental processes. Most research psychologists today agree with (1) but not with (2).

Pavlov’s work laid the foundation for many of psychologist John B. Watson’s ideas. In searching for laws underlying learning, Watson (1913) urged his colleagues to discard reference to inner thoughts, feelings, and motives. The science of psychology should instead study how organisms respond to stimuli in their environments, said Watson: “Its theoretical goal is the prediction and control of behavior. Introspection forms no essential part of its methods.” Simply said, psychology should be an objective science based on observable behavior.

This view, which Watson called behaviorism, influenced North American psychology during the first half of the twentieth century. Pavlov and Watson shared both a disdain for “mentalistic” concepts (such as consciousness) and a belief that the basic laws of learning were the same for all animals—whether sea slugs or dogs or humans. Few researchers today propose that psychology should ignore mental processes, but most now agree that classical conditioning is a basic form of learning by which all organisms adapt to their environment.

Pavlov’s Experiments

7-3 Who was Pavlov, and what are the basic components of classical conditioning?

Ivan Pavlov “Experimental investigation…should lay a solid foundation for a future true science of psychology” (1927).

Pavlov was driven by a lifelong passion for research. After setting aside his initial plan to follow his father into the Russian Orthodox priesthood, Pavlov received a medical degree at age 33 and spent the next two decades studying the digestive system. This work earned him Russia’s first Nobel Prize in 1904. But his novel experiments on learning, which consumed the last three decades of his life, earned this feisty scientist his place in history.

Pavlov’s new direction came when his creative mind seized on an incidental observation. Without fail, putting food in a dog’s mouth caused the animal to salivate. Moreover, the dog began salivating not only at the taste of the food, but also at the mere sight of the food, or the food dish, or the person delivering the food, or even at the sound of that person’s approaching footsteps. At first, Pavlov considered these “psychic secretions” an annoyance—until he realized they pointed to a simple but fundamental form of learning.

Pavlov and his assistants tried to imagine what the dog was thinking and feeling as it drooled in anticipation of the food. This only led them into fruitless debates. So, to explore the phenomenon more objectively, they experimented. To eliminate other possible influences, they isolated the dog in a small room, secured it in a harness, and attached a device to divert its saliva to a measuring instrument (FIGURE 7.3). From the next room, they presented food—first by sliding in a food bowl, later by blowing meat powder into the dog’s mouth at a precise moment. They then paired various neutral stimuli (NS)—events the dog could see or hear but didn’t associate with food—with food in the dog’s mouth. If a sight or sound regularly signaled the arrival of food, would the dog learn the link? If so, would it begin salivating in anticipation of the food?

Figure 7.3
Pavlov’s device for recording salivation A tube in the dog’s cheek collects saliva, which is measured in a cylinder outside the chamber.

neutral stimulus (NS) in classical conditioning, a stimulus that elicits no response before conditioning.

283

The answers proved to be Yes and Yes. Just before placing food in the dog’s mouth to produce salivation, Pavlov sounded a tone. After several pairings of tone and food, the dog, now anticipating the meat powder, began salivating to the tone alone. In later experiments, a buzzer1, a light, a touch on the leg, even the sight of a circle set off the drooling. (This procedure works with people, too. When hungry young Londoners viewed abstract figures before smelling peanut butter or vanilla, their brain soon responded in anticipation to the abstract images alone [Gottfried et al., 2003].)

A dog does not learn to salivate in response to food in its mouth. Rather, food in the mouth automatically, unconditionally, triggers a dog’s salivary reflex (FIGURE 7.4). Thus, Pavlov called the drooling an unconditioned response (UR). And he called the food an unconditioned stimulus (US).

Figure 7.4
Pavlov’s classic experiment Pavlov presented a neutral stimulus (a tone) just before an unconditioned stimulus (food in mouth). The neutral stimulus then became a conditioned stimulus, producing a conditioned response.

unconditioned response (UR) in classical conditioning, an unlearned, naturally occurring response (such as salivation) to an unconditioned stimulus (US) (such as food in the mouth).

unconditioned stimulus (US) in classical conditioning, a stimulus that unconditionally—naturally and automatically—triggers an unconditioned response (UR).

284

conditioned response (CR) in classical conditioning, a learned response to a previously neutral (but now conditioned) stimulus (CS).

conditioned stimulus (CS) in classical conditioning, an originally irrelevant stimulus that, after association with an unconditioned stimulus (US), comes to trigger a conditioned response (CR).

Salivation in response to the tone, however, is learned. It is conditional upon the dog’s associating the tone with the food. Thus, we call this response the conditioned response (CR). The stimulus that used to be neutral (in this case, a previously meaningless tone that now triggers salivation) is the conditioned stimulus (CS). Distinguishing these two kinds of stimuli and responses is easy: Conditioned = learned; unconditioned = unlearned.

If Pavlov’s demonstration of associative learning was so simple, what did he do for the next three decades? What discoveries did his research factory publish in his 532 papers on salivary conditioning (Windholz, 1997)? He and his associates explored five major conditioning processes: acquisition, extinction, spontaneous recovery, generalization, and discrimination.

RETRIEVAL PRACTICE

  • An experimenter sounds a tone just before delivering an air puff to your blinking eye. After several repetitions, you blink to the tone alone. What is the NS? The US? The UR? The CS? The CR?

NS = tone before conditioning; US = air puff; UR = blink to air puff; CS = tone after conditioning; CR = blink to tone.

Acquisition

acquisition in classical conditioning, the initial stage, when one links a neutral stimulus and an unconditioned stimulus so that the neutral stimulus begins triggering the conditioned response. In operant conditioning, the strengthening of a reinforced response.

7-4 In classical conditioning, what are the processes of acquisition, extinction, spontaneous recovery, generalization, and discrimination?

To understand the acquisition, or initial learning, of the stimulus-response relationship, Pavlov and his associates wondered: How much time should elapse between presenting the NS (the tone, the light, the touch) and the US (the food)? In most cases, not much—half a second usually works well.

What do you suppose would happen if the food (US) appeared before the tone (NS) rather than after? Would conditioning occur? Not likely. With but a few exceptions, conditioning doesn’t happen when the NS follows the US. Remember, classical conditioning is biologically adaptive because it helps humans and other animals prepare for good or bad events. To Pavlov’s dogs, the originally neutral tone became a CS after signaling an important biological event—the arrival of food (US). To deer in the forest, the snapping of a twig (CS) may signal a predator’s approach (US).

More recent research on male Japanese quail shows how a CS can signal another important biological event (Domjan, 1992, 1994, 2005). Just before presenting a sexually approachable female quail, the researchers turned on a red light. Over time, as the red light continued to herald the female’s arrival, the light caused the male quail to become excited. They developed a preference for their cage’s red-light district, and when a female appeared, they mated with her more quickly and released more semen and sperm (Matthews et al., 2007). This capacity for classical conditioning gives the quail a reproductive edge.

285

In humans, too, objects, smells, and sights associated with sexual pleasure—even a geometric figure in one experiment—can become conditioned stimuli for sexual arousal (Byrne, 1982; Hoffman, 2012). Onion breath does not usually produce sexual arousal. But when repeatedly paired with a passionate kiss, it can become a CS and do just that (FIGURE 7.5). The larger lesson: Conditioning helps an animal survive and reproduce—by responding to cues that help it gain food, avoid dangers, locate mates, and produce offspring (Hollis, 1997). Learning makes for yearning.

Figure 7.5
An unexpected CS Psychologist Michael Tirrell (1990) recalled: “My first girlfriend loved onions, so I came to associate onion breath with kissing. Before long, onion breath sent tingles up and down my spine. Oh what a feeling!”

higher-order conditioning a procedure in which the conditioned stimulus in one conditioning experience is paired with a new neutral stimulus, creating a second (often weaker) conditioned stimulus. For example, an animal that has learned that a tone predicts food might then learn that a light predicts the tone and begin responding to the light alone. (Also called second-order conditioning.)

Remember:
NS = Neutral Stimulus
US = Unconditioned Stimulus
UR = Unconditioned Response
CS = Conditioned Stimulus
CR = Conditioned Response

Through higher-order conditioning, a new NS can become a new CS without the presence of a US. All that’s required is for it to become associated with a previously conditioned stimulus. If a tone regularly signals food and produces salivation, then a light that becomes associated with the tone may also begin to trigger salivation. Although this higher-order conditioning (also called second-order conditioning) tends to be weaker than first-order conditioning, it influences our everyday lives. Imagine that something makes us very afraid (perhaps a guard dog associated with a previous dog bite). If something else, such as the sound of a barking dog, brings to mind that guard dog, the bark alone may make us feel a little afraid.

RETRIEVAL PRACTICE

  • If the aroma of a baking cake sets your mouth to watering, what is the US? The CS? The CR?

The cake (and its taste) are the US. The associated aroma is the CS. Salivation to the aroma is the CR.

extinction the diminishing of a conditioned response; occurs in classical conditioning when an unconditioned stimulus (US) does not follow a conditioned stimulus (CS); occurs in operant conditioning when a response is no longer reinforced.

Extinction and Spontaneous Recovery What would happen, Pavlov wondered, if after conditioning, the CS occurred repeatedly without the US? If the tone sounded again and again, but no food appeared, would the tone still trigger salivation? The answer was mixed. The dogs salivated less and less, a reaction known as extinction, which is the diminished response that occurs when the CS (tone) no longer signals an impending US (food). But a different picture emerged when Pavlov allowed several hours to elapse before sounding the tone again. After the delay, the dogs would again begin salivating to the tone (FIGURE 7.6). This spontaneous recovery—the reappearance of a (weakened) CR after a pause—suggested to Pavlov that extinction was suppressing the CR rather than eliminating it.

Figure 7.6
Idealized curve of acquisition, extinction, and spontaneous recovery The rising curve shows the CR rapidly growing stronger as the NS becomes a CS due to repeated pairing with the US (acquisition). The CR then weakens rapidly as the CS is presented alone (extinction). After a pause, the (weakened) CR reappears (spontaneous recovery).

spontaneous recovery the reappearance, after a pause, of an extinguished conditioned response.

286

RETRIEVAL PRACTICE

  • The first step of classical conditioning, when an NS becomes a CS, is called ______________. When a US no longer follows the CS, and the CR becomes weakened, this is called ______________.

acquisition, extinction

Generalization Pavlov and his students noticed that a dog conditioned to the sound of one tone also responded somewhat to the sound of a new and different tone. Likewise, a dog conditioned to salivate when rubbed would also drool a bit when scratched (Windholz, 1989) or when touched on a different body part (FIGURE 7.7). This tendency to respond likewise to stimuli similar to the CS is called generalization.

Figure 7.7
Generalization Pavlov demonstrated generalization by attaching miniature vibrators to various parts of a dog’s body. After conditioning salivation to stimulation of the thigh, he stimulated other areas. The closer a stimulated spot was to the dog’s thigh, the stronger the conditioned response. (Data from Pavlov, 1927.)

generalization the tendency, once a response has been conditioned, for stimuli similar to the conditioned stimulus to elicit similar responses.

Generalization can be adaptive, as when toddlers taught to fear moving cars also become afraid of moving trucks and motorcycles. And generalized fears can linger. One Argentine writer who underwent torture still recoils with fear when he sees black shoes—his first glimpse of his torturers as they approached his cell. Generalized anxiety reactions have been demonstrated in laboratory studies comparing abused with nonabused children (FIGURE 7.8). When an angry face appears on a computer screen, abused children’s brain-wave responses are dramatically stronger and longer lasting (Pollak et al., 1998). And when a face that we’ve been conditioned to like (or dislike) is morphed into another face, we also have some tendency to like (or dislike) the vaguely similar morphed face (Gawronski & Quinn, 2013).

Figure 7.8
Child abuse leaves tracks in the brain Abused children’s sensitized brains react more strongly to angry faces (Pollak et al., 1998). This generalized anxiety response may help explain their greater risk of psychological disorder.

Stimuli similar to naturally disgusting objects will, by association, also evoke some disgust, as otherwise desirable fudge does when shaped to resemble dog feces (Rozin et al., 1986). In each of these human examples, people’s emotional reactions to one stimulus have generalized to similar stimuli.

287

RETRIEVAL PRACTICE

  • What conditioning principle is influencing the snail’s affections?

Generalization

discrimination in classical conditioning, the learned ability to distinguish between a conditioned stimulus and stimuli that do not signal an unconditioned stimulus.

Discrimination Pavlov’s dogs also learned to respond to the sound of a particular tone and not to other tones. This learned ability to distinguish between a conditioned stimulus (which predicts the US) and other irrelevant stimuli is called discrimination. Being able to recognize differences is adaptive. Slightly different stimuli can be followed by vastly different consequences. Confronted by a guard dog, your heart may race; confronted by a guide dog, it probably will not.

Pavlov’s Legacy

7-5 Why does Pavlov’s work remain so important?

What remains today of Pavlov’s ideas? A great deal. Most psychologists now agree that classical conditioning is a basic form of learning. Judged with today’s knowledge of the interplay of our biology, psychology, and social-cultural environment, Pavlov’s ideas were incomplete. But if we see further than Pavlov did, it is because we stand on his shoulders.

Why does Pavlov’s work remain so important? If he had merely taught us that old dogs can learn new tricks, his experiments would long ago have been forgotten. Why should we care that dogs can be conditioned to salivate at the sound of a tone? The importance lies, first, in the finding that many other responses to many other stimuli can be classically conditioned in many other organisms—in fact, in every species tested, from earthworms to fish to dogs to monkeys to people (Schwartz, 1984). Thus, classical conditioning is one way that virtually all organisms learn to adapt to their environment.

Second, Pavlov showed us how a process such as learning can be studied objectively. He was proud that his methods involved virtually no subjective judgments or guesses about what went on in a dog’s mind. The salivary response is a behavior measurable in cubic centimeters of saliva. Pavlov’s success therefore suggested a scientific model for how the young discipline of psychology might proceed—by isolating the basic building blocks of complex behaviors and studying them with objective laboratory procedures.

To review Pavlov’s classic work and to play the role of experimenter in classical conditioning research, visit LaunchPad’s PsychSim 6: Classical Conditioning. See also a 3-minute re-creation of Pavlov’s lab in the Video: Pavlov’s Discovery of Classical Conditioning.

RETRIEVAL PRACTICE

  • In slasher movies, sexually arousing images of women are sometimes paired with violence against women. Based on classical conditioning principles, what might be an effect of this pairing?

If viewing an attractive nude or seminude woman (a US) elicits sexual arousal (a UR), then pairing the US with a new stimulus (violence) could turn the violence into a conditioned stimulus (CS) that also becomes sexually arousing, a conditioned response (CR).

288

Applications of Classical Conditioning

7-6 What have been some applications of Pavlov’s work to human health and well-being? How did Watson apply Pavlov’s principles to learned fears?

Other chapters in this text—on consciousness, motivation, emotion, health, psychological disorders, and therapy—show how Pavlov’s principles can influence human health and well-being. Two examples:

Pavlov’s work also provided a basis for Watson’s (1913) idea that human emotions and behaviors, though biologically influenced, are mainly a bundle of conditioned responses. Working with an 11-month-old, Watson and Rosalie Rayner (1920; Harris, 1979) showed how specific fears might be conditioned. Like most infants, “Little Albert” feared loud noises but not white rats. Watson and Rayner presented a white rat and, as Little Albert reached to touch it, struck a hammer against a steel bar just behind his head. After seven repeats of seeing the rat and hearing the frightening noise, Albert burst into tears at the mere sight of the rat. Five days later, he had generalized this startled fear reaction to the sight of a rabbit, a dog, and a sealskin coat, but not to dissimilar objects, such as toys.

John B. Watson Watson (1924) admitted to “going beyond my facts” when offering his famous boast: “Give me a dozen healthy infants, well-formed, and my own specified world to bring them up in and I’ll guarantee to take any one at random and train him to become any type of specialist I might select—doctor, lawyer, artist, merchant-chief, and, yes, even beggar-man and thief, regardless of his talents, penchants, tendencies, abilities, vocations, and race of his ancestors.”

For years, people wondered what became of Little Albert. Sleuthing by Russell Powell and his colleagues (2014) found a well-matched child of one of the hospital’s wet nurses. The child, William Albert Barger, went by Albert B.—precisely the name used by Watson and Rayner. This Albert lived to 2007. He was an easygoing person, though, perhaps coincidentally, he had an aversion to dogs. Albert died without ever knowing of his early life in a hospital residence or his role in psychology’s history.

People also wondered what became of Watson. After losing his Johns Hopkins professorship over an affair with Raynor (his graduate student, whom he later married), he joined an advertising agency as the company’s resident psychologist. There, he used his knowledge of associative learning to conceive many successful advertising campaigns, including one for Maxwell House that helped make the “coffee break” an American custom (Hunt, 1993).

The treatment of Little Albert would be unacceptable by today’s ethical standards. Also, some psychologists had difficulty repeating Watson and Rayner’s findings with other children. Nevertheless, Little Albert’s learned fears led many psychologists to wonder whether each of us might be a walking repository of conditioned emotions. If so, might extinction procedures or even new conditioning help us change our unwanted responses to emotion-arousing stimuli?

One patient, who for 30 years had feared entering an elevator alone, did just that. Following his therapist’s advice, he forced himself to enter 20 elevators a day. Within 10 days, his fear had nearly vanished (Ellis & Becker, 1982). With support from airline AirTran, comedian-writer Mark Malkoff likewise extinguished his fear of flying. He lived on an airplane for 30 days, taking 135 flights that had him in the air 14 hours a day (NPR, 2009). After a week and a half, his fears had faded and he began playing games with fellow passengers. (His favorite antic was the “toilet paper experiment”: He’d put one end of a roll in the toilet, unroll the rest down the aisle, and flush. The entire roll would be sucked down in three seconds.) In Chapter 16 we will see more examples of how psychologists use behavioral techniques to treat emotional disorders and promote personal growth.

289

RETRIEVAL PRACTICE

  • In Watson and Rayner’s experiments, “Little Albert” learned to fear a white rat after repeatedly experiencing a loud noise as the rat was presented. In this experiment, what was the US? The UR? The NS? The CS? The CR?

The US was the loud noise; the UR was the fear response to the noise; the NS was the rat before it was paired with the noise; the CS was the rat after pairing; the CR was fear of the rat.

REVIEW: Basic Learning Concepts and Classical Conditioning

REVIEW Basic Learning Concepts and Classical Conditioning

LEARNING OBJECTIVES

RETRIEVAL PRACTICE Take a moment to answer each of these Learning Objective Questions (repeated here from within this section). Then click the 'show answer' button to check your answers. Research suggests that trying to answer these questions on your own will improve your long-term retention (McDaniel et al., 2009).

7-1 What is learning, and what are some basic forms of learning?

Learning is the process of acquiring through experience new information or behaviors. In associative learning, we learn that certain events occur together. In classical conditioning, we learn to associate two or more stimuli (a stimulus is any event or situation that evokes a response). We associate stimuli that we do not control, and we respond automatically. This is called respondent behavior. In operant conditioning, we learn to associate a response and its consequences. These associations produce operant behaviors. Through cognitive learning, we acquire mental information that guides our behavior. For example, in observational learning, we learn new behaviors by observing events and watching others.

7-2 What was behaviorism’s view of learning?

Ivan Pavlov’s work on classical conditioning laid the foundation for behaviorism, the view that psychology should be an objective science that studies behavior without reference to mental processes. The behaviorists believed that the basic laws of learning are the same for all species, including humans.

7-3 Who was Pavlov, and what are the basic components of classical conditioning?

Ivan Pavlov, a Russian physiologist, created novel experiments on learning. His early twentieth-century research over the last three decades of his life demonstrated that classical conditioning is a basic form of learning.
     Classical conditioning is a type of learning in which an organism comes to associate stimuli. In classical conditioning, an NS is a stimulus that elicits no response before conditioning. A UR is an event that occurs naturally (such as salivation), in response to some stimulus. A US is something that naturally and automatically (without learning) triggers the unlearned response (as food in the mouth triggers salivation). A CS is a previously neutral stimulus (such as a tone) that, after association with a US (such as food) comes to trigger a CR. A CR is the learned response (salivating) to the originally neutral (but now conditioned) stimulus.

7-4 In classical conditioning, what are the processes of acquisition, extinction, spontaneous recovery, generalization, and discrimination?

In classical conditioning, acquisition is associating an NS with the US so that the NS begins triggering the CR. Acquisition occurs most readily when the NS is presented just before (ideally, about a half-second before) a US, preparing the organism for the upcoming event. This finding supports the view that classical conditioning is biologically adaptive. Through higher-order conditioning, a new NS can become a new CS.
     Extinction is diminished responding when the CS no longer signals an impending US. Spontaneous recovery is the appearance of a formerly extinguished response, following a rest period. Generalization is the tendency to respond to stimuli that are similar to a CS. Discrimination is the learned ability to distinguish between a CS and other irrelevant stimuli.

7-5 Why does Pavlov’s work remain so important?

Pavlov taught us that significant psychological phenomena can be studied objectively, and that classical conditioning is a basic form of learning that applies to all species.

7-6 What have been some applications of Pavlov’s work to human health and well-being? How did Watson apply these principles to learned fears?

Classical conditioning techniques are used to improve human health and well-being in many areas, including behavioral therapy for some types of psychological disorders. The body’s immune system may also respond to classical conditioning.
     Pavlov’s work also provided a basis for Watson’s idea that human emotions and behaviors, though biologically influenced, are mainly a bundle of conditioned responses. Watson applied classical conditioning principles in his studies of “Little Albert” to demonstrate how specific fears might be conditioned.

TERMS AND CONCEPTS TO REMEMBER

RETRIEVAL PRACTICE Match each of the terms on the left with its definition on the right. Click on the term first and then click on the matching definition. As you match them correctly they will move to the bottom of the activity.

Question

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

Use to create your personalized study plan, which will direct you to the resources that will help you most in .

290