Height and seriousness of crime in XYY men.

The case histories of XYY males in two security settings were ranked by degree of seriousness of crime. The correlations of these scores with height were either zero (for data of Daly with the history of the propositus excluded) or positive (for data of Jacobs et al., P less than 0.05). For both studies, the results were contrary to the expectation of negative correlation which would be found if, in accord with Hunter's suggestion, authorities were biased to place XYYs in security settings because of the more threatening appearance associated with larger stature.