Biological Explanation of Schizophrenia
- Created by: Gemma Bishop
- Created on: 20-05-13 19:43
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- Biological Explanation of Schizophrenia- GENETIC FACTORS
- Evidence has suggested that Schizophrenia has a genetic basis.
- Twin studies- Rosenthal (1963) found identical quadruplets all developed sz.
- Family studies- Gottesman (1991) found nearly a 50% chance if both parents had sz, a 16% if one and an 8% chance if a sibling did.
- Adoption studies- Tienari (1991) 10.3% of children adopted sz against just 1.1% with non-sz mothers
- Prospective studies- Whalberg (1997) suggested sz develops from the interaction of both gentics and enviroment.
- Evaluation
- There may be something special about twins making it hard to draw conclusions from them.
- Enviromental factors need to be considered as suggested by Wahlberg.
- Family members spend time together in the same enviroment; enviromental & genetic factors should be studied at the same time.
- Evidence has suggested that Schizophrenia has a genetic basis.
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