Instrument

General description

Reliability data

Validity data

Minnesota Multiphasic Personality Assessment-II (MMPI; Graham, 2000 )

Self-report test that consists of 567 true/false questions. The responses are scored and interpreted based on a series of clinical (Hypochondria, Depression, Hysteria, Psychopathic Deviate, Masculinity-Feminity, Paranoia, Psychasthenia, Schizophrenia, Hypomania, Social Introversion) and validity scales (VRIN, TRIN, L, F, and K, S).

Internal reliability coefficients of clinical scales are variable and range from .34 (Paranoia) to .85 (Psychasthenia, Schizophrenia). Test-retest reliabilities coefficients range from .67 (Psychasthenia) to .93 (Social Introversion)^a,c

Factor analysis of MMPI-II performed in a normative sample suggests the clinical scales load on two factors. One factor is general maladjustment and psychotic mentation with the second factor being neurotic tendencies (Graham, 2000; Nichols, 2001)^a,c