Biological: Genetic Explanation (AQA A-Level Psychology): Quizzes

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Biological: Genetic Explanation
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What does the genetic explanation propose about genes and schizophrenia?

Multiple genes work together

What concordance rate did Gottesman & Shields (1976) find for severe schizophrenia in identical twins?

75-91%

According to Torrey et al. (1994), what is the chance the other identical twin develops schizophrenia?

28%

Varma & Sharma (1993) found what concordance for first-degree relatives of those with schizophrenia?

35%

In Parnas et al. (1993), what % of children whose mothers had schizophrenia developed it themselves?

16%

Kety & Ingraham (1992) found schizophrenia rates were how much higher in genetic vs adoptive kin?

Ten times higher

Which chromosome did Gurling et al. (2006) associate with schizophrenia?

8p21-22

How many patients did the Schizophrenia Working Group (2014) analyse DNA from?

36,989

Why does incomplete concordance in identical twins suggest environmental factors matter?

If purely genetic, it would be 100%

What model do genetic findings support regarding schizophrenia development?

Diathesis-stress model

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