PURPOSE: High-risk mentally disordered offenders present a diverse array of clinical characteristics. To contain and effectively treat this heterogeneous population requires a full understanding of the group's clinical profile. This study aimed to identify and validate clusters of clinically coherent profiles within one high-risk mentally disordered population in the UK. METHODS: Latent class analysis (a statistical technique to identify clustering of variance from a set of categorical variables) was applied to 174 cases using clinical diagnostic information to identify the most parsimonious model of best fit. Validity analyses were performed. RESULTS: Three identified classes were a 'delinquent' group (n = 119) characterised by poor educational history, strong criminal careers and high recidivism risk; a 'primary psychopathy' group (n = 38) characterised by good educational profiles and homicide offences and an 'expressive psychopathy' group (n = 17) presenting the lowest risk and characterised by more special educational needs and sexual offences. CONCLUSIONS: Individuals classed as high-risk mentally disordered offenders can be loosely segregated into three discrete subtypes: 'delinquent', 'psychopathic' or 'expressive psychopathic', respectively. These groups represent different levels of risk to society and reflect differing treatment needs.
PURPOSE: High-risk mentally disordered offenders present a diverse array of clinical characteristics. To contain and effectively treat this heterogeneous population requires a full understanding of the group's clinical profile. This study aimed to identify and validate clusters of clinically coherent profiles within one high-risk mentally disordered population in the UK. METHODS: Latent class analysis (a statistical technique to identify clustering of variance from a set of categorical variables) was applied to 174 cases using clinical diagnostic information to identify the most parsimonious model of best fit. Validity analyses were performed. RESULTS: Three identified classes were a 'delinquent' group (n = 119) characterised by poor educational history, strong criminal careers and high recidivism risk; a 'primary psychopathy' group (n = 38) characterised by good educational profiles and homicide offences and an 'expressive psychopathy' group (n = 17) presenting the lowest risk and characterised by more special educational needs and sexual offences. CONCLUSIONS: Individuals classed as high-risk mentally disordered offenders can be loosely segregated into three discrete subtypes: 'delinquent', 'psychopathic' or 'expressive psychopathic', respectively. These groups represent different levels of risk to society and reflect differing treatment needs.
Authors: Jemma C Chambers; Jenny Yiend; Barbara Barrett; Tom Burns; Helen Doll; Seena Fazel; Crispin Jenkinson; Asha Kaur; Martin Knapp; Emma Plugge; Lesley Sutton; Ray Fitzpatrick Journal: Crim Behav Ment Health Date: 2009
Authors: Mark Freestone; Celia Taylor; Sophia Milsom; Chris Mikton; Simone Ullrich; Ophelia Phillips; Jeremy Coid Journal: Crim Behav Ment Health Date: 2012-02-28
Authors: A W Loranger; N Sartorius; A Andreoli; P Berger; P Buchheim; S M Channabasavanna; B Coid; A Dahl; R F Diekstra; B Ferguson Journal: Arch Gen Psychiatry Date: 1994-03