Chapter 6 Flashcards
(38 cards)
Classical conditioning
Classical conditioning is one of a number of different types of learning that psychologists have identified, but a general definition encompasses them all: Classical conditioning is a type of learning in which a neutral stimulus (such as the experimenter’s footsteps) comes to elicit a response after being paired with a stimulus (such as food) that naturally brings about the response.
Learning
Learning is a relatively permanent change in behavior that is brought about by experience.
Habituation
Infants exhibit a simple type of learning called habituation. Habituation is the decrease in response to a stimulus that occurs after repeated presentations of the same stimulus. For example, young infants may initially show interest in a novel stimulus, such as a brightly colored toy, but they will soon lose interest if they see the same toy over and over again. (Adults exhibit habituation too: Newlyweds soon stop noticing that they are wearing a wedding ring.)
Habituation permits us to ignore things that have stopped providing new information.
Neutral stimulus
A stimulus that, before conditioning, does not naturally bring about the response in which we are interested. In Pavlov’s experiment, the bell is a neutral stimulus.
Unconditioned stimulus & unconditioned response
The response that is elicited from an unconditioned stimulus is called an unconditioned response. An unconditioned response (UCR) is a natural, innate response that occurs automatically and needs no training. Unconditioned responses are always brought about by the presence of unconditioned stimuli.
Conditioned stimulus & conditioned response
A conditioned stimulus (CS) is a once-neutral stimulus that has been paired with an unconditioned stimulus to bring about a response formerly caused only by the unconditioned stimulus. A conditioned response (CR), is brought by the conditioned stimulus after conditioning.
Classical conditioning & phobias
In extreme cases, classical conditioning can lead to the development of phobias, which are intense, irrational fears. For example, an insect phobia might develop in someone who is stung by a bee. The insect phobia might be so severe that the person refrains from leaving home.
Extinction
Extinction occurs when a previously conditioned response decreases in frequency and eventually disappears.
To produce extinction, one needs to end the association between conditioned stimuli and unconditioned stimuli. Extinction occurs when the conditioned stimulus is presented repeatedly without the unconditioned stimulus.
Spontaneous recovery
The reemergence of an extinguished conditioned response after a period of time with no further conditioning.
Stimulus generalization
Stimulus generalization is the process in which, after a stimulus has been conditioned to produce a particular response, stimuli that are similar to the original stimulus produce the same response. The greater the similarity between the two stimuli, the greater the likelihood of stimulus generalization.
The conditioned response elicited by the new stimulus is usually not as intense as the original conditioned response, although the more similar the new stimulus is to the old one, the more similar the new response will be.
Stimulus discrimination
Stimulus discrimination occurs if two stimuli are sufficiently distinct from each other that one evokes a conditioned response but the other does not. Stimulus discrimination provides the ability to differentiate between stimuli.
Operant conditioning
Operant conditioning is learning in which a voluntary response is strengthened or weakened, depending on its favorable or unfavorable consequences. When we say that a response has been strengthened or weakened, we mean that it has been made more or less likely to occur regularly.
Unlike classical conditioning, in which the original behaviors are the natural, biological responses to the presence of stimulus such as food, water, or pain, operant conditioning applies to voluntary responses, which an organism performs deliberately to produce a desirable outcome. The term operant emphasizes this point: The organism operates on an environment to produce a desirable result. Operant conditioning is at work when we learn that toiling industriously can bring about a raise or that studying hard results in good grades.
Law of effect
Responses that lead to satisfying consequences are more likely to be repeated.
Reinforcement
Reinforcement is the process by which a stimulus increases the probability that a preceding behavior will be repeated.
Reinforcer
A reinforcer is any stimulus that increases the probability that a preceding behavior will occur again.
Primary reinforcer
A primary reinforcer satisfies some biological need and works naturally, regardless of a person’s previous experience. Food for a hungry person, warmth for a cold person, and relief for a person in pain all would be classified as primary reinforcers.
Secondary reinforcer
A secondary reinforcer is a stimulus that becomes reinforcing because of its association with a primary reinforcer. For instance, we know that money is valuable, because we have learned that it allows us to obtain other desirable objects, including primary reinforcers such as food and shelter.
Positive reinforcer
A positive reinforcer is a stimulus added to the environment that brings about an increase in a preceding response.
Negative reinforcer
A negative reinforcer refers to an unpleasant stimulus whose removal leads to an increase in the probability that a preceding response will be repeated in the future.
Punishment
Punishment refers to a stimulus that decreases the probability that prior behavior will occur again.
Positive punishment
Positive punishment weakens a response by applying an unpleasant stimulus.
Negative punishment
Negative punishment consists of the removal of something pleasant.
Reinforcement vs punishment
Reinforcement increases the frequency of the behavior preceding it; punishment decreases the frequency of the behavior preceding it.
Schedules of reinforcement
Refers to the frequency and timing of reinforcement that follows desired behavior. Behavior that is reinforced every time it occurs is said to be on a continuous reinforcement schedule; if it is reinforced some but not all the time, it is on a partial (or intermittent) reinforcement schedule.
Although learning occurs more rapidly under a continuous reinforcement schedule, behavior lasts longer after reinforcement stops when it is learned under a partial reinforcement schedule.
Partial reinforcement schedules (such as those provided by slot machines) maintain performance longer than do continuous reinforcement schedules (such as those established in candy vending machines) before extinction- the disappearance of the conditioned response- occurs.