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Psychology ­ Biological Explanations of Schizophrenia


Intro: inherit faulty genes from parents...
o Twin Studies, Gottsman, 40 studies, found a concordance rate of 48% in MZ twins
and 17% in DZ twins
o Heston developed this and said 90% chance of suffering SOME SORT of disorder if

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o Randrup gave amphetamine to rats and saw schizophrenic behaviour appear and
then reversed the effect by giving them neuroleptic drugs which inhibit the
release of dopamine (issue of extrapolation)
o The drug L-dopa taken by Parkinson disease sufferers to increase their low
levels of dopamine can produce many symptoms…


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