The Personality Assessment Inventory as a proxy for the Psychopathy Checklist Revised: testing the incremental validity and cross-sample robustness of the Antisocial Features Scale.
The Personality Assessment Inventory's (PAI's) ability to predict psychopathic personality features, as assessed by the Psychopathy Checklist-Revised (PCL-R), was examined. To investigate whether the PAI Antisocial Features (ANT) Scale and subscales possessed incremental validity beyond other theoretically relevant PAI scales, optimized regression equations were derived in a sample of 281 Canadian federal offenders. ANT, or ANT-Antisocial Behavior (ANT-A), demonstrated unique variance in regression analyses predicting PCL-R total and Factor 2 (Lifestyle Impulsivity and Social Deviance) scores, but only the Dominance (DOM) Scale was retained in models predicting Factor 1 (Interpersonal and Affective Deficits). Attempts to cross-validate the regression equations derived from the first sample on a sample of 85 U.S. sex offenders resulted in considerable validity shrinkage, with the ANT Scale in isolation performing comparably to or better than the statistical models for PCL-R total and Factor 2 scores. Results offer limited evidence of convergent validity between the PAI and the PCL-R.
Douglas
Kevin S
KS
Department of Psychology, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada. douglask@sfu.ca
Guy
Laura S
LS
Edens
John F
JF
Boer
Douglas P
DP
Hamilton
Jennine
J
D000293:Adolescent; D000328:Adult; D000368:Aged; D000987:Antisocial Personality Disorder / Q000175:diagnosis* / Q000208:ethnology / Q000523:psychology; D002170:Canada; D003415:Crime / Q000208:ethnology / Q000523:psychology*; D003469:Culture; D005843:Geography; D006801:Humans; D008297:Male; D008875:Middle Aged; D010555:Personality Inventory; D011329:Prisoners / Q000523:psychology*; D011594:Psychometrics / Q000295:instrumentation*; D011599:Psychopathology / Q000295:instrumentation*; D012043:Regression, Psychology; D012307:Risk Factors; D014481:United States