THE WISCONSIN PERSONALITY-DISORDERS INVENTORY - DEVELOPMENT, RELIABILITY, AND VALIDITY

The Wisconsin Personality Disorders Inventory (WISPI) is a self-report questionnaire derived from an interpersonal perspective on the DSM-II I-R personality disorders. Internal consistency for 11 personality dis order scales was very high in a sample of 1230 normals and patients. T wo-week test-retest reliability in 80 patients and nonpatients was als o high. Interscale correlations were higher than desirable but were re duced by corrections for response bias. A clinician sort of WISPI item s to DSM-III criteria and independent coding of items for interpersona l content indicated good validity vis-a-vis both frames of reference. Patients scored higher than nonpatients on most scales, and patients w ith current clinical diagnoses of any personality disorder scored high er than those with no Axis II disorders. Other indicators of concurren t validity were high to moderate correlations with Personality Disorde rs Questionnaire, MMPI Personality Disorder Scales, and Millon Clinica l Multiaxial Inventory self-reports; and with clinician ratings on a d imensional personality assessment form in a subsample of 146 outpatien ts.