Critically consider biological explanations of schizophrenia

Essay specific features

 

Issue:

Psychology

 

Written by:

Joan W

 

Date added:

September 2, 2012

 

Level:

University

 

Grade:

A

 

No of pages / words:

7 / 1809

 

Was viewed:

9642 times

 

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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...
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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...
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