Joshua Miller

There has long been interest in identifying and studying ‘‘successful psychopaths.” This study sampled psychologists with an interest in law, attorneys, and clinical psychology professors to obtain descriptions of individuals considered to be psychopaths who were also successful in their endeavors. The results showed a consistent description across professions and convergence with descriptions of traditional psychopathy, though the successful psychopathy profile had higher scores on conscientiousness, as measured within the five-factor model (FFM). These results are useful in documenting the existence of successful psychopathy, demonstrating the potential benefit of informant methodology, and providing an FFM description that distinguishes successful psychopaths from unsuccessful psychopaths studied more routinely within prison settings.

Since its publication, the Psychopathic Personality Inventory and its revision (Lilien- feld & Andrews, 1996; Lilienfeld & Widows, 2005) have become increasingly popular such that it is now among the most frequently used self-report inventories for the assessment of psychopathy. The current meta-analysis examined the relations between the two PPI factors (factor 1: Fearless Dominance; factor 2: Self-Centered Impulsivity), as well as their relations with other validated measures of psychopathy, internalizing and externalizing forms of psychopathology, general personality traits, and antisocial personality disorder symptoms. Across 61 samples reported in 49 publications, we found support for the convergent and criterion validity of both PPI factor 2 and the PPI total score. Much weaker validation was found for PPI factor 1, which manifested limited convergent validity and a pattern of correlations with central criterion variables that was inconsistent with many conceptualizations of psychopathy.