Lec12VolBehavIntroA

Lec12VolBehavIntroA - Lecture 12 A few final words on...

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Lecture 12 (3/10/09) A few final words on classical conditioning and introducing operant conditioning (voluntary behavior) Individual differences and knockout mice (cc) Safety signal study (cc) Voluntary behavior and operant conditioning
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Individual differences and classical conditioning and phobias There are individual differences in strength of unconditioned response to stressful stimuli (see previous lecture notes on twin study skin conductance) There is evidence of individual differences in classical conditioning itself… PTSD patients show slower extinction rates Mice who have been genetically engineered to not respond to the neurotransmitter serotonin (“knockout” mice data, Tsetsenis et al. 2007 study)
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iClicker Question How does avoidance help maintain phobias? A = In order to solve a psychological problem it is necessary to consciously confront it. Hence avoidance allows problem to persist. B = Avoidance removes opportunity for extinction of conditioned fear C = Avoidance strengthens the conditioned fear
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Treatment implications of classical conditioning and the study of phobias If conditioning plays a role in phobias then “de-conditioning” or extinction should help decrease phobia Lots and lots of supporting evidence If psychological phenomena have a biological basis then psychological treatment should change the brain We saw evidence that this is so If you can create new fears by conditioning then it should
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This note was uploaded on 04/23/2009 for the course PSYCHOLOGY 11002 taught by Professor Heyman during the Spring '09 term at BC.

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Lec12VolBehavIntroA - Lecture 12 A few final words on...

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