Personality-based typology of adolescent sexual offenders using the Millon Adolescent Clinical Inventory

Previous research suggests that identifying specific subgroups amongst the population of adolescent sexual offenders may contribute to understanding the aetiology of their offending. Such knowledge may also help to improve the treatment outcomes for this group. The Millon Adolescent Clinical Inventory (MACI) profiles of 25 adolescent male sexual offenders aged 13 to 17 in a community-based treatment sample were analysed to determine if this measure could be used to identify different subtypes of offenders based on personality variables. Three groups were identified by cluster analysis: one group of antisocial and externalising types (n = 11), another group of withdrawn, socially inadequate types (n = 7) and a third group displaying few traits of clinically significant elevation (n = 7). Support was also shown for the hypothesis that adolescent sexual offenders exhibit personality profiles similar to those of delinquent non-sexual offenders. The observed typology suggests potentially different etiological pathways and different treatment needs.<br />