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The Lees-Haley Fake Bad Scale (FBS) or MMPI Symptom Validity Scale is a set of 43 items in the Minnesota Multiphasic Personality Inventory (MMPI), selected by Paul R. Lees-Haley in 1991 to detect malingering for the forensic evaluation of personal injury claimants. [1]
The internal consistency of the MMPI-2 scales for the psychiatric sample was comparable to the results obtained from the normative samples. Robust validity of the Korean MMPI-2 scales was evidenced by correlations with the SCL-90-R scales, behavioral correlates, and therapist ratings. [88]
Publications on the MMPI-2-RC Scales include book chapters, multiple published articles in peer-reviewed journals, and address the use of the scales in a wide range of settings. [2] The MMPI-2-RF scales rest on an assumption that psychopathology is a homogeneous condition that is additive. [3]
The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) is a self-reported personality test which is the most widely used psychological assessment measure in research to detect malingered PTSD, typically by comparing genuine PTSD patients with individuals trained and instructed to fabricate PTSD on the MMPI-2. [23]
These versions were evaluated using several criteria, such as internal consistency of the scales (or how much the items in one scale correlate with each other). The ability to fake good or bad while taking the test was also evaluated using a sample of college students that were given different instructions on how to answer the test. [3]
A self-report inventory is a type of psychological test in which a person fills out a survey or questionnaire with or without the help of an investigator. [1] Self-report inventories often ask direct questions about personal interests, values, symptoms, behaviors, and traits or personality types.
Edwards subsequently developed the first Social Desirability Scale, a set of 39, true-false questions extracted from the Minnesota Multiphasic Personality Inventory (MMPI), questions that judges could, with high agreement, order according to their social desirability. [4]
The usefulness of the currently-existing validity scales is sometimes questioned. One theory is that subjects in tests of validity scales are given instructions (e.g. to fake the best impression of themselves or to fake an emotionally disturbed person) that virtually guarantee the detection of faking.