Assessing psychopathic personality traits with the MMPI-2

Area of Science:

• Psychology
• Clinical Psychology
• Personality Assessment

Background:

• Psychopathic personality traits are complex, involving social deviance and affective-interpersonal deficits.
• The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) is a widely used psychological assessment tool.
• Understanding the MMPI-2's utility in measuring psychopathy is crucial for accurate diagnosis and treatment.

Purpose of the Study:

• To evaluate the MMPI-2's effectiveness in assessing psychopathic personality traits.
• To determine if MMPI-2 scales measuring affective and interpersonal functioning enhance the assessment of global psychopathy and its facets.
• To compare the predictive validity of different MMPI-2 scales for psychopathy.

Main Methods:

• A study involving 281 male and female college students.
• Utilized the MMPI-2 and the Psychopathic Personality Inventory (PPI) for assessment.
• Employed regression models to analyze the predictive relationships between MMPI-2 scales and PPI factors.

Main Results:

• MMPI-2 Social Deviance scales (e.g., Clinical Scales 4 and 9, ASP) significantly predicted the social deviance factor of the PPI.
• MMPI-2 measures of affective and interpersonal functioning significantly predicted the affective-interpersonal factor of the PPI.
• Restructured Clinical scales of the MMPI-2 provided the most parsimonious assessment of psychopathic traits.

Conclusions:

• The MMPI-2 is a valuable instrument for assessing psychopathic personality traits.
• Different MMPI-2 scales uniquely contribute to measuring distinct facets of psychopathy.
• The Restructured Clinical scales offer an efficient approach to evaluating psychopathy using the MMPI-2.