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Critically consider biological explanations of schizophrenia
Essay specific features
Written by:
Joan W
Date added:
September 2, 2012
Level:
University
Grade:
A
No of pages / words:
7 / 1809
Was viewed:
9712 times
Rating of current essay:
Essay content:
Gottesman (1991) summarised 40 twin studies and found that the concordance rate for MZ twins was 48% and the concordance rate for DZ twins was about 17%. Concordance rates were also studied by Cardano et al. (1999) using the Maudsley twin register. They found concordance rates to be 40% for MZ twins and 17% for DZ twins...
displayed 300 characters
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They found concordance rates to be 40% for MZ twins and 17% for DZ twins.
Although this is strong evidence for genetic factors in schizophrenia, concordance rates are not 100% and therefore there must be some environmental input. Loehlin and Nichols (1976) argued that the reason for the higher concordance rates in MZ rather than DZ twins was due to MZ twins being treated more similarly so producing a greater environmental similarity...
displayed 300 characters
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