Scales with a T-score of 65 or greater are considered clinically significant. Raw scores on these scales are transformed to norm-based T-scores (mean = 50, standard deviation = 10) to enhance the interpretability of results. The test includes multiple validity indices, assessing test-taking attitudes and approach 10 basic, numbered clinical scales (1 = Hypochondriasis, 2 = Depression, 3 = Hysteria, 4 = Psychopathic Deviate, 5 = Masculinity-Femininity, 6 = Paranoia, 7 = Psychasthenia, 8 = Schizophrenia, 9 = Hypomania, 0 = Social Introversion, with all but scales 5 and 0 considered core clinical scales) and their subscales as well as more than five dozen content scales (e.g., Antisocial Practices, Anxiety), content component scales (e.g., Negative Treatment Indicators: Low Motivation), personality psychopathology trait scales (e.g., Aggressiveness, Negative Emotionality/Neuroticism), and supplementary scales (e.g., Addiction Potential, Overcontrolled-Hostility). First published in 1942 and revised in 1989, the instrument yields a wealth of clinical data and is used across multiple clinical and medical settings, for employment screening and selection, and in a variety of forensic situations.
Using 567 true-false items, the MMPI-2 assesses a diverse range of personality characteristics symptoms of psychopathology and patterns of behavior, attitudes, and concerns. The original Minnesota Multiphasic Personality Inventory (MMPI) and its successor have been recognized as the most widely used and researched objective clinical personality inventories.