title: Understanding psychopathy through an evaluation of interpersonal behavior: testing the factor structure of the interpersonal measure of psychopathy in a large sample of jail detainees.
abstract: Interpersonal characteristics are core features of the psychopathy construct which have a unique pattern of correlations with a variety of external correlates. To improve the assessment of interpersonal traits, the current study evaluated the internal structure of the Interpersonal Measure of Psychopathy (IM-P) through exploratory and confirmatory factor analyses (CFA) in a large sample of jail inmates. A 17-item, 3-factor (Dominance, Grandiosity, and Boundary Violations) structure evidenced good fit in European American inmates. A second CFA demonstrated good fit for this structure in a sample of African American inmates. Moreover, a multigroup CFA indicated structural invariance between European and African American inmates. External validity was tested and demonstrated through positive correlations between IM-P factor scores and Psychopathy Checklist--Revised total and facet scores (R. D. Hare, 2003) and antisocial personality disorder symptoms and diagnoses. Modest correlations between Grandiosity scores and scores on the Shipley Institute of Living Scale--Revised (R. A. Zachary, 1994) were also observed. Finally, a step-down hierarchical regression was conducted to test for racial bias of the IM-P factor scores in relation to external correlates. Little evidence was found for slope bias, but there was evidence of intercept bias for some analyses. Implications and advantages of assessing psychopathy through a comprehensive evaluation of interpersonal traits are discussed.
authors.affiliation: Mendota Mental Health Institute, Madison, WI53704, USA. michael.vitacco@dhfs.wisconsin.gov
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Vitacco
authors.forename: David S
authors.initials: DS
authors.lastname: Kosson
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American / Q000523:psychology; D000987:Antisocial Personality Disorder / Q000175:diagnosis / Q000523:psychology*; D057189:Checklist; D005163:Factor Analysis, Statistical; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008875:Middle Aged; D010552:Personality Assessment; D011329:Prisoners / Q000523:psychology*; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D055815:Young Adult
references.citation: Psychol Assess. 2001 Dec;13(4):531-42
references.pmid: 11793896
references.citation: Psychol Assess. 2009 Mar;21(1):68-78
references.pmid: 19290767
references.citation: Psychol Assess. 2002 Mar;14(1):97-109
references.pmid: 11911052
references.citation: Assessment. 1998 Jun;5(2):187-95
references.pmid: 9626394
references.citation: Law Hum Behav. 2006 Aug;30(4):493-507
references.pmid: 16874464
references.citation: J Pers Assess. 2006 Aug;87(1):74-83
references.pmid: 16856788
references.citation: Law Hum Behav. 2009 Aug;33(4):308-19
references.pmid: 18958610
references.citation: Psychol Assess. 2009 Jun;21(2):137-51
references.pmid: 19485669
references.citation: Law Hum Behav. 2004 Oct;28(5):505-27
references.pmid: 15638207
references.citation: Psychol Assess. 2007 Dec;19(4):474-9
references.pmid: 18085940
references.citation: J Pers Disord. 2007 Jun;21(3):289-304
references.pmid: 17536941
references.citation: J Abnorm Psychol. 1998 Aug;107(3):527-32
references.pmid: 9715587
references.citation: Mol Psychiatry. 2009 Jan;14(1):5-6
references.pmid: 19096450
references.citation: J Consult Clin Psychol. 1976 Aug;44(4):614-23
references.pmid: 939845
references.citation: Behav Sci Law. 2000;18(5):567-80
references.pmid: 11113962
references.citation: J Consult Clin Psychol. 2005 Jun;73(3):466-76
references.pmid: 15982144
references.citation: Assessment. 2006 Dec;13(4):470-82
references.pmid: 17050916
references.citation: Assessment. 2007 Sep;14(3):255-69
references.pmid: 17690382
references.citation: Crim Justice Behav. 2007;34(8):953-970
references.pmid: 19458783
references.citation: J Consult Clin Psychol. 2008 Oct;76(5):893-9
references.pmid: 18837606
references.citation: Clin Psychol Rev. 2000 Jan;20(1):113-36
references.pmid: 10660831
references.citation: J Abnorm Psychol. 2008 May;117(2):396-405
references.pmid: 18489215
references.citation: J Clin Child Adolesc Psychol. 2004 Dec;33(4):731-42
references.pmid: 15498740
references.citation: Psychol Assess. 2007 Dec;19(4):430-6
references.pmid: 18085935
references.citation: Psychol Health Med. 2006 May;11(2):190-7
references.pmid: 17129907
references.citation: Psychol Assess. 2006 Dec;18(4):382-92
references.pmid: 17154759
references.citation: J Abnorm Psychol. 1978 Dec;87(6):636-41
references.pmid: 739086
references.citation: J Pers Disord. 2009 Aug;23(4):416-24
references.pmid: 19663661
references.citation: Alcohol Alcohol. 2008 May-Jun;43(3):326-33
references.pmid: 18258726
references.citation: Neuropsychology. 2006 Mar;20(2):153-165
references.pmid: 16594776
references.citation: Psychol Assess. 2001 Jun;13(2):171-88
references.pmid: 11433793
references.citation: Annu Rev Clin Psychol. 2008;4:217-46
references.pmid: 18370617
references.citation: J Pers Disord. 2007 Apr;21(2):102-17
references.pmid: 17492916
references.citation: J Abnorm Psychol. 1990 Aug;99(3):250-9
references.pmid: 2212275
references.citation: Biol Psychiatry. 2005 May 15;57(10):1103-8
references.pmid: 15866549
references.citation: Law Hum Behav. 2008 Feb;32(1):28-45
references.pmid: 17629778
references.citation: Law Hum Behav. 2007 Apr;31(2):209-29
references.pmid: 17123157
references.citation: Behav Sci Law. 2003;21(6):695-712
references.pmid: 14696027