The interpersonal measure of psychopathy: construct and incremental validity in male prisoners.
The authors examined the construct and incremental validity of the Interpersonal Measure of Psychopathy (IM-P), a relatively new instrument designed to detect interpersonal behaviors associated with psychopathy. Observers of videotaped Psychopathy Checklist-Revised (PCL-R) interviews rated male prisoners (N = 93) on the IM-P. The IM-P correlated significantly with the PCL-R total score. Moreover, the IM-P was preferentially related to the interpersonal rather than the affective and antisocial lifestyle features of psychopathy. IM-P scores were significantly correlated with age, antisocial behaviors, and self-reported fear, anxiety, and socialization (in reverse). Hierarchical multiple regression analyses demonstrated that although the IM-P exhibited incremental validity beyond the PCL-R total score in detecting self-reported fear, anxiety, and several personality traits, it did not exhibit much incremental validity beyond PCL-R Factor 1. These findings raise questions concerning the unique assessment contribution of the IM-P beyond PCL-R Factor 1. Potential reasons for these findings and alternative means of enhancing the interpersonal assessment of psychopathy are discussed.
Zolondek
Stacey
S
Assessment and Treatment Alternatives, Philadelphia, PA, USA.
Lilienfeld
Scott O
SO
Patrick
Christopher J
CJ
Fowler
Katherine A
KA
D000328:Adult; D000987:Antisocial Personality Disorder / Q000175:diagnosis* / Q000523:psychology; D005431:Florida; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008875:Middle Aged; D010552:Personality Assessment; D011329:Prisoners / Q000523:psychology*; D011330:Prisons; D011569:Psychiatric Status Rating Scales; D011599:Psychopathology; D012920:Social Behavior Disorders / Q000175:diagnosis* / Q000523:psychology; D011795:Surveys and Questionnaires