Sex Chromosome Abnormalities in Two State Hospitals for Patients requiring Special Security

Sexually abusive behaviour in an adolescent boy with the 48,XXYY syndrome: a case study

“…Surveys of male prisoners and mentally abnormal offenders have also indicated elevated frequencies of XYY individuals (Casey et al, 1966;Jacobs et al, 1965;Money et al, 1975;Price et al, 1966), which appears to have an incidence in the general population of about 0.1 % (Jarvik, Klodin & Matsuyama, 1973). Jarvik et al (1973) suggested that the sex difference in crime reflected the masculine traits contributed by the Y chromosome, while possession of the extra Y chromosome exaggerated masculinity and highlighted the association between maleness and violence.…”

“…For some time there has been speculation that the presence of additional sex chromosomes is associated with intellectual impairment and criminality (Casey et al, 1966;Jacobs et al, 1965;Price et al, 1966). Most studies focus on males showing a 47, XXY configuration (Klinefelter's Syndrome), or on the 47, XYY complement.…”

Chromosome studies in man: past achievements and recent advances.

“…The presence of an extra Y chromosome has been found to be associated with heights of over 6 ft (1-8 m) in males and implicated as a cause of antisocial behaviour because of the high proportion of inmates of security hospitals who were found to have this karyotype (Jacobs et al, 1965;Casey et al, 1966). However, in a survey of newborn males the incidence of XYY was found to be 1: 700 (Ratcliffe et al, 1970), suggesting that some individuals with this karyotype grow up to be law-abiding citizens.…”

47, XYY Karyotype and Borderline Personality Disorder: An Italian Judicial Case and a Review of the Literature

“…In this regard, the first studies date back to the 1960s and the 1970s, when a lot of research were conducted on offenders, often in prison, trying to find a direct relationship between an extra Y and the deviant behavior [3,[38][39][40][41][42][43][44][45][46][47].…”