Scale 4 (Pd) of the MMPI and the diagnosis antisocial personality

The MMPI and a structured diagnostic interview were administered to 225 military offenders in an attempt to determine the relationship between Scale 4 (Pd) of the MMPI and a behavioral diagnosis of Antisocial Personality (AS). Individuals satisfying criteria for a diagnosis of AS were found to score significantly higher than inmates not satisfying these criteria on Scale 4, regardless of whether K- or non-K-corrected T scores were used. Several potential moderating variables were crossed with the AS measure but only confining offense (person crime vs nonperson crime) evidenced a statistically significant interaction with AS.