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Cleckley (1941) hypothesized that true or "primary" psychopathic individuals have "good" intelligence. This study examined the relation between psychopathy and intelligence in 122 detained children and adolescents. We used the Psychopathy Checklist-Youth Version (PCL-YV; Forth, Kosson, Kaufman Sternberg, 1993). Finally, the results also suggested that psychopathy traits reflecting disturbances in affective processing were inversely associated with verbal intellectual abilities. Thus, Cleckley's hypothesis was partially supported by the data, when taking into account the facets of psychopathy and when examining intelligence from the perspective of traditional and more novel and contemporary intellectual models.
Salekin et al. (Thu,) studied this question.
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