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  • Title: MMPI validity measures: a comparative study of original with alternative indices.
    Author: Woychyshyn CA, McElheran WG, Romney DM.
    Journal: J Pers Assess; 1992 Feb; 58(1):138-48. PubMed ID: 1545338.
    Abstract:
    A comparison was made of the original MMPI validity scales (L,F,K,F - K) with validity scales devised subsequently (TR, Ca, Ds, Mp, Ws - Wo) to determine which scales, the older or newer, were better, either alone or combined, in detecting fake-good, fake-bad, and careless responding. This was accomplished by having groups of subjects answer the MMPI first under standard conditions and then, 1 week later, under one of the falsifying conditions. A group of 40 psychiatric patients responded under standard and then fake-good conditions; a group of 40 university students responded under standard and then fake-bad conditions; and a group of 20 students responded under standard and then fake-careless conditions. Results indicate that both the traditional and newer validity indices were equally good at detecting fake-good responding. None of the indices was adequate in detecting careless responses. We conclude, as a consequence of this study, that the newer scales perform a clinically useful function when faking good is suspected on the MMPI.
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