Replicated item level factor analysis of the full MMPI.

Abstract

We completed a comprehensive factor analysis of the full MMPI item pool by using recent advances in computational facilities. Nearly 20,000 MMPI protocols were collected for the analysis, however, we discarded invalid records and protocols with more than 50 missing items. Analyses were computed on a developmental sample of 5,506 subjects and a cross-validation sample of 5,632. Twenty-one replicated factors were found by using an orthogonal varimax solution. The rotated factors were submitted to several experts on MMPI for factor naming. The consensus obtained on the item factors suggests that this analysis provides an unambiguous picture of the major content dimensions in the MMPI item pool.

Neuroticism, cognitive ability, and the metabolic syndrome: The Vietnam Experience Study

“…Minnesota Multiphasic Personality Inventory (MMPI) (32) was administered, which consists of 566 true-false statements used to measure 10 clinical psychopathology scales, including neuroticism dimensions (33,34). To obtain a better neuroticism measure, 24 overlapping items similar to neuroticism were identified, which did not reflect phobias, health, health-related behaviours, or prevalent psychopathology (16).…”

Domains and Facets: Hierarchical Personality Assessment Using the Revised NEO Personality Inventory

“…Even large item pools may omit important aspects of personality. For example, McCrae, Costa, and Piedmont (1993) reported that there are relatively few items in the California Psychological Inventory that measure Agreeableness, and J. H. Johnson, Butcher, Null, and K. N. Johnson's (1984) item factor analysis of the Minnesota Multiphasic Personality Inventory (Hathaway & McKinley, 1983) found no factors related lo Conscientiousness.…”

Replicated item level factor structure of the MMPI: Racial and sexual differences

“…This study utilized a sample of 1,567 patients referred to a medical center for coronary arteriography. A number of Varimax rotations were performed on a matrix computed from these data, including a 21-factor solution that was compared to that of Johnson et al (1984). Despite a very limited subject-to-variable ratio, Costa et al (1985) found reasonable correspondence with Johnson et al's (1984) factors for Neuroticism, Cynicism, Delinquency, Stereotypic Femininity, Stereotypic Masculinity, Phobias, and Dreaming.…”

“…One of only two extant studies of the entire item matrix was completed by Johnson et al (1984). Subjects consisted of 11,130 patients who received treatment at Missouri Department of Mental Health facilities during the 1970s.…”

“…Although Johnson et al (1984) and Costa et al (1985) analyzed the entire item matrix, a variety of key questions are left unanswered by this work. First, there are a number of issues that pertain to the replicability of their factor solution, particularly with regard to sex and race.…”