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Psyc 103 Lecture 14

Psyc 103 Lecture 14 - Psyc 103 Lecture 14 1:02:00 PM Escape...

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Psyc 103 Lecture 14 14/11/2007 16:02:00 Escape and Avoidance Experimental paradigm… o Two chambers with electrical grids and a light bulb in each chamber o Gets shock in one of the chambers and escaped to other chamber o Light goes off and within ten seconds, dog was shocked o Dog learns to escape shock before ten seconds was up after light was  turned off Escape o Performing a response terminates an aversive stimulus o Negative reinforcement (S  R- ) Avoidance o A response prevents an aversive stimulus from occurring  o Type of S R- ‘Avoidance Paradox’ o How can the nonoccurance of an aversive event can serve as a  “reinforcer” for an voidance response? Theories of Avoidance (comparison to OCD) Two-Factor Theory o Both classical and operant conditioning required for avoidance  responding C/C: Fear transferred from shock (US)>>CS
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