Theilgaard : The criminal gene
- Created by: Emmie46
- Created on: 29-03-15 11:46
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- Theilgaard : The criminal gene
- Aim
- To if criminals had a particular gene that is responsible for their behavior
- Procedure
- Blood samples from over 30,000 men born in 1940's
- 2 chromosome abnormalities - 16 had XXY and 12 had XYY
- Interview by social worker, background, criminal history & intelligence
- Personality test to see aggression compared to XY males
- Results
- XYY lower intelligence & more aggressive
- More similarities between XXY & XYY.
- No solid evidence for criminal gene
- Conclusion
- Limited evidence XYY males more aggressive than XXY
- More similar than different
- Strengths
- Social worker had no knowledge of aim
- Vast range of tests to measure different aspects
- Weaknesses
- Small sample
- only 12 XYY, cannot be generalised
- link between XXY & XYY is a correlation
- Aim
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