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biological explanation of schizophrenia
genetic basis of schizophrenia
ao3 of genetic basis
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sophie w
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Cards (20)
What did Joseph (2004) conduct a meta-analysis on?
Twin study data prior to
2001
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What was the MZ twin concordance rate reported by Joseph (2004)?
40%
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What was the DZ twin concordance rate reported by Joseph (2004)?
7%
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Why does a higher MZ twin concordance rate support the role of genes in schizophrenia?
Because MZ twins are genetically
identical
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What does the MZ twin concordance rate not being close to 100% suggest?
Schizophrenia
is not purely genetic
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What do the findings of twin studies indicate about the causes of schizophrenia?
Genetics
are involved but not the sole cause
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What is a methodological issue in investigating concordance rates among family members?
Similar
environmental influences
affect them
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How might overprotection from parents affect siblings?
It may lead to social
withdrawal
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What could high concordance rates for schizophrenia between related individuals indicate?
Exposure to family dysfunction, not genes
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Why is it difficult to disentangle heredity and environment influences?
Both affect individuals throughout their
lifetime
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What does the difficulty in disentangling heredity and environment reduce?
The validity of
genetic
research on
schizophrenia
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What did Tienari et al. (2000) study provide evidence for?
The
genetic basis
of
schizophrenia
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What percentage of adopted children with schizophrenic mothers were diagnosed with schizophrenia?
7%
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What percentage of adopted children with non-schizophrenic mothers were diagnosed with schizophrenia?
2%
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How much higher is the prevalence of schizophrenia for children with a biological mother with the disorder?
3 times
higher
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Why is the Finnish adoption study considered convincing evidence?
Related
individuals lived apart
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What is a limitation of purely genetic explanations for schizophrenia?
They are overly
deterministic
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How might genes predispose an individual to schizophrenia?
By making them vulnerable to the
disorder
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What choice might a child make if aware of a parent's schizophrenia?
Begin therapy at
onset
of symptoms
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What can mitigate potential innate factors for schizophrenia?
Environmental
situations and life choices
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