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3.12.07 - Learning and Motivation INSTRUMENTAL OPERANT...

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Learning and Motivation (3/12/07) INSTRUMENTAL OPERANT CONDITIONING FOUNDATIONS INTRO Goal oriented behaviors To either achieve or avoid a certain outcome Behavior determines outcome Different from classical because in classical, outcome happens no matter what S-R stimulus consequence EARLY INVESTIGATION OF INTRUMENTAL/OPERANT CONDITIONING Edward Thorndike Late 1800’s Papa of instrumental Influenced by Darwin; studied animal intelligence Animals that were able to adapt were “intelligent” Puzzle box experiment Hungry cat in box with food out of reach, had to figure out how to get out Accidentally pushed lever and opened box Figures it out quicker each day Stimulus-in the puzzle box; Response-push the lever; Consequence-eat the food Each time it happened, strengthened the association Did another experiment where he punished the cat for stepping on the lever Weakened the original association Law of effect If a response in the presence of a stimulus is followed by a satisfying event, the association between stimulus and response is strengthened If a response in the presence of a stimulus is followed by an annoying event, the association between stimulus and response is weakened If they liked the effect, they would keep doing it If they did not like it, they would stop B.F. Skinner Papa of operational 1930’s studied reinforcement on behavior Objected Thorndike’s interpretation of using the words “annoyed” and
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