biological explanation for dysfunctional behaviour

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who gave a biological explanation for dysfunctional behaviour
gottesman and shields
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what methodology was used?
review of adoption and twin studies into schizophrenia between 67-76
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what studies were reviewed
3 adoption studies, 5 twin studies
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how many participants were there in total
711AS, 210monozygotic 319 dizygotic
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describe the procedure
incidence of schizophrenia in adopted children and monozygotic twins was extrapolated from the research. Achieved by comparing biological parents and and Biological siblings against adoptive parents and siblings,
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what was compared in the twin studies
concordance rates for mononzygotic and dizygotic twins was compared
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what were the findings
all adoption studies found an increased incidence of schizophrenia in adopted children with a biological parent who had schizophrenia. Normal children fostered to parents with schizophrenia showed little evidence of it transferring
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what were the results from the twin studies
they all found a higher concordance rate for schizophrenia in Mygotic twins over Dygotic. 58% concordance rate for Mgotic 12% Dygotic twins
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what conclusions can be drawn from this
significant genetic input but some interaction with the environment must trigger it
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what methodology was used?

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review of adoption and twin studies into schizophrenia between 67-76

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what studies were reviewed

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how many participants were there in total

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describe the procedure

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