Scott O. Lilienfeld, PhD - Professional Manual by Scott O. Lilienfeld, PhD, Michelle R. Widows, PhD
The PPI-R is a 154-item self-report measure of both global psychopathy and the component traits of psychopathy. Like the original PPI, the PPI-R is construct valid, time efficient, and may detect response styles potentially relevant to psychopathy (i.e. positive or negative impression management, random or careless responding). Rather than focusing exclusively on anti-social or criminal behaviours, the PPI-R measures the continuum of psychopathic personality traits present in a range of individuals and can be used in both clinical (e.g., forensic) and non-clinical (e.g. student, community) settings.
- Self-report measure with 4th-grade reading level.
- Focuses on psychopathic personality traits and behaviours rather than anti-social and criminal behaviours exclusively.
- Provides both offender and community/college normative samples.
- Takes less time to administer than other published psychopathy measures.
- Cost-effective to use in correctional and forensic settings and for both individual and group assessments.
The PPI-R was standardised and validated for use with men and women from ages 18-86 years. Community adults in the community/college sample reflect 2002 U.S. Census data (U.S. Bureau of the Census, 2002) for race/ethnicity, educational background and geographic area. In addition, the PPI-R includes normative data for a male offender sample, should users wish to compare respondents to incarcerated offenders (e.g. for management purposes). The instrument is useful in a variety of settings, particularly correctional facilities, forensic practice, substance abuse treatment centres and research.
PPI-R Software portfolio now included in kit!
Developed as a faster way to score and profile the PPI-R, the PPI-R Software Portfolio generates unlimited comprehensive score reports, which display the individual's demographic information and include a scoring summary table, T-score profile, validity scale tables, and an item response table.
Windows: XP, Vista, 7, 8, 10
Other virtual machine solutions (e.g., Parallels, VMWare) are not supported.
NTFS file system; Internet connection or telephone for activation; CD-ROM drive for installation.
Reliability and Validity
- Internal consistency is adequate for the PPI-R Total score and the PPI-R Content scale scores, with coefficient alpha ranging from .78-.92 for the community/college sample. For the offender sample, internal consistency estimates for the Total and Content scale scores ranged from .72-.84.
- Temporal stability of PPI-R Total and Content Scale scores ranged from .82-.93 for a subset of the community/college sample over an average test-retest period of 19.94 days.
- Evidence for construct validity of the PPI-R also was obtained via significant correlations with Hare's Self-Report Psychopathy Scale-II (SRP-II) Total score and Levenson's Self-Report Psychopathy Scale primary and secondary psychopathy scores in the community/college and offender samples.
- Evidence of construct validity was also obtained via significant correlations between the PPI-R and self-report measures of pathological and non-pathological personality functioning, DSM-IV
- Antisocial Personality Disorder, interpersonal problems, sensation-seeking, substance use and offense variables.
Exploratory factor analyses using the community/college sample yielded a three-factor model of psychopathology: Self-Centered Impulsivity, Fearless Dominance, and Coldheartedness.
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