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DEF: A RELATIVELY DURABLE CHANGE IN BEHAVIOR OR KNOWLEDGE THAT IS DUE TO EXPERIENCE LEARNING.

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Presentation on theme: "DEF: A RELATIVELY DURABLE CHANGE IN BEHAVIOR OR KNOWLEDGE THAT IS DUE TO EXPERIENCE LEARNING."— Presentation transcript:

1 DEF: A RELATIVELY DURABLE CHANGE IN BEHAVIOR OR KNOWLEDGE THAT IS DUE TO EXPERIENCE LEARNING

2 CLASSICAL CONDITIONING DEF: a type of learning in which a stimulus acquires the capacity to evoke a response that was originally evoked by another stimulus

3 CLASSICAL CONDITIONING 1 st described by Ivan Pavlov Studying role of saliva in digestion Stumbled onto “psychic reflexes”

4 TERMINOLOGY Unconditioned stimulus (UCS): a stimulus that evokes an unconditioned response w/o previous conditioning (meat powder) Unconditioned response (UCR): an unlearned reaction to an unconditioned stimulus that occurs w/o previous conditioning (salivation) Conditioned stimulus (CS): previously neutral stimulus that has, through conditioning, acquired the capacity to evoke a conditioned response (tone) Conditioned response (CR): a learned reaction to a conditioned stimulus that occurs because of previous conditioning (salivation w/tone)

5 CLASSICAL CONDITIONING “Psychic reflex” is a conditioned reflex Conditioned responses are elicited They are relatively automatic

6 CONDITIONED EMOTIONAL RESPONSES Phobias Everyday fears Can evoke pleasant feelings Used by advertisers

7 CONDITIONING AND PHYSIOLOGICAL RESPONSES Immunosuppression Can elicit allergic reactions Drug tolerance

8 BASIC PROCESSES IN CLASSICAL CONDITIONING: ACQUISTION Acquisition: initial stage of learning something Pavlov: acquisition of conditioned response depends on stimulus contiguity—occur together in time and space Simultaneous conditioning: CS and UCS begin and end together Short-delayed conditioning: CS begins just before the UCS and stops at the same time as the UCS Trace conditioning: CS begins and ends before UCS is presented

9 BASIC PROCESSES: EXTINCTION DEF: the gradual weakening and disappearance of a conditioned response tendency Occurs when CS is presented w/o the UCS consistently

10 BASIC PROCESSES: SPONTANEOUS RECOVERY DEF: the reappearance of an extinguished response after a period of non-exposure to the CS Usually weaker than usual Renewal Effect: if a response is extinguished in a different environment than acquired, the response will reappear when returned to original environment

11 STIMULUS GENERALIZATION DEF: occurs when an organism that has learned a response to a specific stimulus responds in the same way to new stimuli that are similar to the original stimulus

12 STIMULUS GENERALIZATION Adaptive Commonplace “Little Albert” experiment w/ John B. Watson Rule: the more similar new stimuli are to the original CS, the greater the generalization

13 STIMULUS DISCRIMINATION DEF: occurs when an organism that has learned a response to a specific stimulus does not respond in the same way to new stimuli that are similar to the original stimulus

14 STIMULUS DISCRIMINATION Adaptive Rule: the less similar new stimuli are to the original CS, the greater the likelihood of discrimination

15 HIGHER-ORDER CONDITIONING Def: a conditioned stimulus functions as if it were an unconditional stimulus New conditioned responses are built on the foundation of already est. CRs


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