Factor structure of the Adolescent Multiphasic Personality Inventory in a psychiatric population.

The factor structure of the Adolescent Multiphasic Personality Inventory (AMPI) in a mental health center psychiatric patient population was examined (N = 70). Principal components factor analysis with Varimax rotation yielded four well defined factors, which accounted for 78% of the total variance. These factors can be conceptualized as neurotic, psychotic, characterological, and validity-defensiveness. Results support the construct validity of the AMPI and are discussed in relation to previous psychometric studies of psychopathology that used other objective personality inventories.