title: The stability of psychopathy across adolescence.
abstract: The current diagnostic system suggests that personality disorder categories be applied to children and adolescents in rare circumstances because of expected changes in personality pathology across development. The present study examined the stability in personality pathology, specifically psychopathy, across childhood and adolescence. Using a short form of the CPS and mixed models incorporating fixed and random effects, we examined the reliability, individual stability, mean-level stability, and predictive utility of juvenile psychopathy as a function of age (i.e., from 7 to 17 years old) in over 1,500 boys from the three cohorts of the Pittsburgh Youth Study. If adolescent development contributes to instability in personality pathology, large age-related fluctuations in reliability, stability, and predictive utility should be observed, particularly in the latter part of adolescence when normative changes are hypothesized to influence levels of psychopathy. Such fluctuations were not observed. In general, juvenile psychopathy could be reliably assessed beginning in childhood, was fairly stable across short and long intervals, showed little mean-level fluctuation, and predicted delinquency across adolescence. These results suggest that concerns about large changes in personality pathology across childhood and adolescence may be overstated. Implications and future directions are discussed.
authors.affiliation: Purdue University, Department of Psychological Sciences, 703 Third Street,West Lafayette, IN 47907-2081, USA. dlynam@psych.purdue.edu
authors.forename: Donald R
authors.initials: DR
authors.lastname: Lynam
authors.forename: Richard
authors.initials: R
authors.lastname: Charnigo
authors.forename: Terrie E
authors.initials: TE
authors.lastname: Moffitt
authors.forename: Adrian
authors.initials: A
authors.lastname: Raine
authors.forename: Rolf
authors.initials: R
authors.lastname: Loeber
authors.forename: Magda
authors.initials: M
authors.lastname: Stouthamer-Loeber
mesh_terms: D000293:Adolescent / Q000502:physiology*; D000328:Adult; D017668:Age of Onset; D000987:Antisocial Personality Disorder / Q000453:epidemiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D010290:Parents / Q000523:psychology; D010414:Pennsylvania; D010554:Personality Disorders / Q000453:epidemiology*; D000297:Psychology, Adolescent; D015203:Reproducibility of Results; D012307:Risk Factors; D012725:Sexual Behavior; D012919:Social Behavior; D012920:Social Behavior Disorders / Q000453:epidemiology; D014505:Urban Population