Reliability, validity, and factor structure of the Swedish Youth Psychopathic Trait Inventory in a UK sample of conduct disordered boys

• Published in: The journal of forensic psychiatry & psychology 2006-06, Vol.17 (2), p.217-229
• Main Authors: Dolan, Mairead C., Rennie, Charlotte E.
• Format: Article
• Language: English
• Subjects: adolescence; Adolescents; Adult and adolescent clinical studies; antisocial behaviour; Biological and medical sciences; conduct disorder; Conduct disordered adolescent boys; Forensic psychiatry; Medical sciences; Personality disorders; Psychiatry; Psychology. Psychoanalysis. Psychiatry; Psychometrics. Diagnostic aid systems; Psychopathology. Psychiatry; Psychopathy; Reliability; Selfreport measures; Sweden; Techniques and methods; Validity; Youth
• ISSN: 1478-9949; 1478-9957
• DOI: 10.1080/14789940500497784

The Swedish Youth Psychopathy Traits Inventory (YPI) is a newly developed self-report measure of psychopathy. Currently, there are no studies looking at the reliability, validity, and factor structure of this measure in conduct disordered adolescents in the UK. A sample of 115 male adolescents (mean age 16.22) with a range of conduct problems on the Kiddie Schedule for Affective Disorders and Schizophrenia (K-SADS) completed the YPI. The YPI had reasonable internal consistency and the data supported a three-factor structure. The YPI showed the expected correlations with a variety of conduct problems and antisocial/offending behaviours. These findings are comparable with those found in the Swedish development sample. Our work adds weight to the evidence base that the YPI may prove a useful adjunct to the assessment of complex personality traits associated with antisocial behaviour.