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mere exposure effect
a learned preference for stimuli to which we have been previously exposed
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classical conditioning
a form of behavioral learning in which a previously neutral stimulus acquires power to elicit the same innate reflex produced by another stimulus
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neutral stimulus
any stimulus that produces no conditioned response prior to learning; brought into a conditioning experiment, researchers call it conditioned stimulus
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unconditioned stimulus
in classical conditioning, stimulus that elicits and unconditioned response
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unconditioned response
in classical conditioning, response elicited by an unconditioned stimulus without prior learning
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acquisition
initial learning stage in classical conditioning, during which the conditioned response comes to be elicited by the conditioned stimulus
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conditioned stimulus
in classical conditioning, a previously neutral stimulus that comes to elicit the conditioned response
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conditioned response
in classical conditioning, a response elicited by a previously neutral stimulus that has become associated with the unconditioned stimulus
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extinction (in classical conditioning)
weakening of a conditioned response in the absence of an unconditioned stimulus
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spontaneous recovery
reappearance of an extinguished conditioned response after a time delay
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stimulus generalization
extension of a learned response to stimulu that are similar to the conditioned stimulus
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stimulus discrimination
change in responses to one stimulus but not to stimuli that are similar
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taste-aversion learning
a biological tendency in which an organism learns, after a single experience, to avoid a food with a certain taste, if eating it is followed by illness
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law of effect
the idea that responses that produced desirable results would be learned, or "stamped" into the organism
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reinforcer
a condition (involving either the presentation or removal of a stimulus) that occurs after a response and strengthens that response
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positive reinforcement
a stimulus presented after a response and increasing the probability of that response happening again
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negative reinforcement
the removal of an unpleasant or aversive stimulus, contingent on a particular behavior (punishment)
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operant chamber
box like apparatus that can be programmed to deliever reinforcers and punishers contingent on an animal's behavior; "skinner box"
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continuous reinforcement
type of reinforcement schedule by which all correct responses are reinforced
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shaping
an operant learning technique in which a new behavior is produced by reinforcing responses that are similar to the desired response
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intermittent reinforcement (partial reinforcement)
type of reinforcement schedule by which some, but not all, correct responses are reinforced
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extinction (inoperant conditioning)
process by which a response that has been learned is weakened by the absence or removal of reinforcement
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schedule of reinforcement
programs specifying the frequence & timing of reinforcements
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fixed ratio schedules
programs by which reinforcement is contingent on a certain, unvarrying number of responses
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variable ratio schedules
reinforcement programs by which the number of responses required for a reinforcement varies from trial to trial
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fixed interval schedules
programs by which reinforcement is contingent on a certain, fixed time period
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variable interval schedules
programs by which the time period between reinforcements varies from trial to trial
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primary reinforcers
reinforcers that have an innate basis because of their biological value to an organism
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secondary reinforcers
stimulu that acquire their reinforcing power by a learned association with primary reinforcers
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token economy
- therapeutic method by which individuals are rewarded with tokens
- act as secondary reinforcers
- can be redeemed for a variety or rewards & privileges
- based on operant conditioning
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premack principle
- David Premack
- a more preferred activity can be used to reinforce a less-preferred activity
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punishment
an aversive stimulus which, occuring after a response, diminished the strength of that response
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positive punishment
application of an aversive stimulus after a response
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omission training (negative punishment)
removal of an appetitive stimulus after a response, leading to decrease in behavior
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insight learning
form of cognitive learning where problem solving occurs by means of a sudden reorganization of perceptions
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cognitive map
mental representation of physical space
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obervational learning
form of cognitive learning in which new responses are acquired after watching others' behavior and the consequences of their behavior
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long-term potentiation
biological process, involving physical changed that strengthen the synapses in groups of nerve cells, believed to be the neural basis of learning
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trace conditioning
NS presented first, removed, then the UCS is presented
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backward conditioning
UCS presented first and NS follows
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simultaneous conditioning
NS and UCS paired together at the same time
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higher-order conditioning
classical conditioning in which a well-learned CS is paired with an NS to produce a CR to the NS
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contiguity theory
that classical conditioning is based on the association in time of the CS prior to the UCS
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contingency theory
says that the key to classical conditioning is how well the CS predicts the appearance of the UCS
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chaining
established a specific sequence of behaviors by initially positively reinforcing each behavior in a desired sequence, then later rewarding only the completed sequence
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latent learning
learning in the absence of rewards
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