MMPI (the Minnesota multiphasic personality inventory) is one of the most common psychological tests in the field of psychopathology. MMPI-2 is one of the forms of the test; it contains 567 true/false questions. Psychologists use this test to evaluate patients with psychological disorders and participants in substance abuse programs and to assess the candidates for high-risk public safety professions. Doctors also use this test in professional, college and family counseling, for criminal justice purposes, and in correction institutions.
In the original MMPI, there are 10 clinical scales that are used to identify masculinity-femininity, social introversion, hypochondriasis, hysteria, psychopathic deviate, paranoia, psychasthenia, schizophrenia, psychopathic deviate, mania and depression. There are several additional validity scales to identify the unusual ways of answering the questions, how truthful and cooperative the test taker is and to identify psychological issues in patients who otherwise would have profiles within the normal range.
The original Minnesota multiphasic personality inventory was developed for evaluation of psychiatric patients, but its area of use expanded over the years.
The most popular version, MMPI-2, takes approximately 60 to 90 minutes to complete. MMPI-2-RF is a shorter version of the test; it contains 338 questions and takes 30 to 50 minutes to complete. MMPI-A is a version of this test designed for teenagers.