XYY Individuals in a Special School

Abstract

The steady stream of publications on the XYY syndrome, including recent papers by Christensen and Nielsen (1973) and a comprehensive review by Hook (1973), demonstrates clearly that confirmation or refutation of the relationship in this syndrome between dull intelligence, even mental deficiency, and impulsive or delinquent behaviour requires further evidence. In an attempt to supply such evidence this report presents psychological and anthropometric information about five XYY subjects detected from amongst attenders at the Special School in the city of Aberdeen.