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  • Title: Subtle-obvious scales of the MMPI: indicators of profile validity in a psychiatric population.
    Author: Brems C, Johnson ME.
    Journal: J Pers Assess; 1991 Jun; 56(3):536-44. PubMed ID: 1865310.
    Abstract:
    This study explored the usefulness of the Minnesota Multiphasic Personality Inventory (MMPI) Subtle-Obvious scales as profile validity indicators with a inpatient psychiatric population. Some 292 MMPI profiles were utilized and divided into overreporters, underreporters, and standard reporters, based on their Subtle-Obvious scale scores. Reporting style was shown to be unrelated to actual patient pathology because of the lack of relationship between reporting style and diagnostic categorization according to the Diagnostic and Statistical Manual of Mental Disorders (3rd ed., rev. [DSM-III-R]; American Psychiatric Association, 1987) Axis I and II. Comparisons of MMPI profiles of the three groups revealed that overreporters endorsed more pathology on the MMPI clinical scales than did either underreporters or standard reporters. The same pattern of response style was demonstrated by subjects on another objective measure, the Beck Depression Inventory, whereas on a projective measure, the Rorschach Inkblot Test, there were no differences between groups. These findings suggest that clinicians may want to utilize the Subtle-Obvious scales to gain information about MMPI profile validity. Specifically, profiles of patients identified as overreporters should be interpreted with caution so as to not overstate their level of pathology.
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