Genetic Explanations of Aggression 0.0 / 5 ? PsychologyAggressionA2/A-levelAQA Created by: Luke BartholomewCreated on: 01-06-13 13:01 What did Sandberg 1961 discover? The 47 XYY Karyotype 1 of 10 What did Court brown find in a sample of 314 patients? Men with an XYY arrangement of sex chromosomes were more aggressive 2 of 10 What did Manuck 2000 find? An abnormality in the MAOA gene was linked with aggressiveness 3 of 10 What did this genetic abnormality cause? Caused higher-than-normal levels of noradrenaline, which other research has linked to aggressive behaviour 4 of 10 What did Caspi 2002 find? Only managed to find higher levels of aggression in those with an abnormality in the MAOA gene if they had also suffered abuse as children. 5 of 10 What does this suggest? The genetic explanation of aggression is incomplete 6 of 10 Rhee and Waldman 2002 conducted a meta-analysis of twin and adoption studies with aggressive behaviour. What did they find? Identical twins had similar aggressive behaviour. Genetic influences are the cause in 41% cases of anti-social behaviour 7 of 10 What is an issue with this study? Difficult to separate a genetic cause from an environmental cause because the study was conducted on twins 8 of 10 What did Nelson 2006 suggest? Selective breeding in animals can lead to increased aggression. This was supported by Cairns’ who conducted a study on mice 9 of 10 What is an overall critism of the biological approach? They are reductionist on their own. This is EXPLANATION OF HUMAN BEHAVIOUR AS BEING CAUSED BY ONE SIMPLE MECHANISM 10 of 10
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