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PSYB32 Lec 2 Chapter 2

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Konstantine Zakzanis

PSYB32 Lecture 2 Chapter 2 Current Paradigms and the Role of Cultural Factors The Role of ParadigmsParadigm conceptual framework or approach within which the scientist works o set of basic assumptions that outline the particular universe of scientific inquiry o specify what problems scientists will investigate and how they will go about it o injects inevitable biases Biological Paradigmbiological paradigm of abnormal behaviour is a continuation of the somatogenic hypothesis o holds that mental disorders are cause by aberrant biological processesalso known as the MEDICAL MODEL or DISEASE MODEL th was the dominant paradigm in Canada and elsewhere from the 1800smid20 centuryBehaviour geneticsThe study of individual differences in behaviour that are attributable in part to differences in genetic makeupGenotype unobservable genetic constitution o NOT staticPhenotype totality of hisher observable behavioural characteristics o Changes over time o Product of interaction between genotype and environmentOnly the genotypes for disorders can be inherited a PREDISPOSITION not the disorder itselfFamily method used to study a genetic predisposition among members of a family because the avg number of genes shared by 2 blood relatives is knownStarting point in these investigations is the collection of a sample of individuals who bear the diagnosis in questionINDEX CASES or PROBANDSTwin method both monozygotic MZ twins and dizygotic DZ twins are compared o Concordance when twins have similar diagnosis o When MZ concordance rate is higher than in DZ rate characteristicheritableAdoptees method study of children with abnormal disorders who were adopted and reared apart from their parents Neuroscience and Biochem in the Nervous System
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