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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 MMPI-2 Restandardization norms were used to validate the MMPI-2-RF; over 53,000 correlations based on more than 600 reference criteria are available in the MMPI-2-RF Technical Manual for the purpose of comparing the validity and reliability of MMPI-2-RF scales with those of the MMPI-2.
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]
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.
The CPI is made up of 434 true-false questions, of which 171 were taken from the original version of the MMPI. [2] [3] The test is scored on 18 scales, three of which are validity scales. Eleven of the non-validity scales were selected by comparing responses from various groups of people. The other four were content validated. [2]
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.
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]
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