Learning
A relatively permanent change in an organism’s behavior due to experience.
Habituation
An organism’s decreasing response to a stimulus with repeated exposure to it.
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).
Classical conditioning
Type of learning in which one learns to link two or more stimuli and anticipate events.
Behaviorism
The view that psychology (1) should be an objective science that (2) studied behavior without reference to mental processes. Most research psychologist today agree with (1) but not with (2)
Unconditioned response
in classical conditioning, the unlearned, naturally occurring response to the unconditioned stimulus (US), such as salivation when food is in the mouth.
Unconditioned stimulus
in classical conditioning, a stimulus that unconditionally—naturally and automatically—triggers a response
Conditioned response
in classical conditioning, the learned response to a previously neutral ( but now conditioned) stimulus (CS)
Conditioned stimulus
in classical conditioning, an originally irrelevant stimulus that, after association with an unconditioned stimulus(US), comes to trigger a conditioned response.
Acquisition
in 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.
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.)
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.
Spontaneous recovery
the reappearance, after a pause, of an extinguished conditioned response.
Generalization
the tendency, once a response has been conditioned, for stimuli similar to the conditioned stimulus to elicit similar responses.
Discrimination
in classical conditioning, the learned ability to distinguish between a conditioned stimulus and stimuli that do not signal an unconditioned stimulus.
Learned helplessness
the hopelessness and passive resignation an animal or human learns when unable to avoid repeated aversive events.
Respondent behavior
behavior that occurs as an automatic response to some stimulus.
Operant conditioning
a type of learning in which behavior is strengthened if followed by a reinforcer or diminished if followed by a punisher.
Operant behavior
behavior that operates on the environment, producing consequences.
Law of effect
Thorndike’s principle that behaviors followed by favorable consequences become more likely, and that behaviors followed by unfavorable consequences become less likely.
Operant chamber
in operant conditioning research, a chamber (also known as a Skinner box) containing a bar or key that an animal can manipulate to obtain a food or water reinforcer; attached devices record the animal’s
Shaping
an operant conditioning procedure in which reinforcers guide behavior toward closer and closer approximations of the desired behavior.
Discriminative stimulus
in operant conditioning, a stimulus that elicits a response after association with reinforcement (in contrast to related stimuli not associated with reinforcement)
Reinforcer
in operant conditioning, any event that strengthens the behavior it follows.
Positive reinforcement
increasing behaviors by presenting positive stimuli, such as food. A positive reinforcer is any stimulus that, when presented after a response, strengthens the response.
Negative reinforcement
increasing behaviors by stopping or reducing negative stimuli, such as shock. A negative reinforcer is any stimulus that, when removed after a response, strengthens the response. (Note: negative reinforcement is not punishment.)
Primary reinforcement
an innately reinforcing stimulus, such as one that satisfies a biological need.
Conditioned reinforcement
a stimulus that gains its reinforcing power through its association with a primary reinforcer; also known as a secondary reinforcer
Continuous reinforcement
reinforcing the desired response every time it occurs
Partial reinforcement
reinforcing a response only part of the time; results in slower acquisition of a response but much greater resistance to extinction than does continuous reinforcement.
Fixed-ratio schedule
in operant conditioning, a reinforcement schedule that reinforces a response only after a specified number of responses.
Variable-ratio schedule
in operant conditioning, a reinforcement schedule that reinforces a response after an unpredictable number of responses
Fixed-interval schedule
in operant conditioning, a reinforcement schedule that reinforces a response only after a specified time has elapsed.
Variable-interval schedule
in operant conditioning, a reinforcement schedule that reinforces a response at unpredictable time intervals.
Punishment
an event that decreases the behavior that it follows.
Cognitive map
a mental representation of the layout of one’s environment. For example, after exploring a maze, rats act as if they have learned a cognitive map of it.
Latent learning
learning that occurs but is not apparent until there is an incentive to demonstrate it.
Insight
a sudden and often novel realization of the solution to a problem
Intrinsic motivation
a desire to perform a behavior effectively for its own sake.
Extrinsic motivation
a desire to perform a behavior to receive promised rewards or avoid threatened punishment.
Overjustification Effect
the effect of promising a reward for doing what one already likes to do. The person may now see the reward, rather than intrinsic interest, as the motivation for performing the task
Biofeedback
a system for electronically recording, amplifying, and feeding back information regarding a subtle physiological state, such as blood pressure or muscle tension
Observational learning
learning by observing others.
Modeling
the process of observing and imitating a specific behavior.
Mirror neurons
frontal lobe neurons that fire when performing certain actions or when observing another doing so. The brain’s mirroring of another’s action may enable imitation and empathy
prosocial behavior
positive, constructive, helpful behavior. The opposite of antisocial behavior.