Validity of Millon's computerized interpretation system for the MCMI: a controlled study.
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Biomedical subjects
Publications and source records attributed to K L Moreland.
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Faschingbauer Abbreviated MMPI (FAM) scales were K-corrected using the FAM K scale or the standard K scale (N = 1,258 normals; 1,181 psychiatric inpatients). The latter increased the correlation between abbreviated and standard scales by amounts proportional to the degree of K-correction. Because using the entire K scale involves the addition of only 11 items to the FAM while it improves the statistical validity of 4 scales in addition to K, this was proposed as a cost-effective means of improving the FAM.
Extracted the MMPI-168 and Faschingbauer Abbreviated MMPI (FAM), along with the K scale items normally excluded from those MMPI short forms, from the full MMPIs of about 535 psychiatric inpatients. Those scales augmented by K items were used to estimate full MMPI scores via regression and substitution equations. The equations were cross-validated on samples of about 545 from the same population. Shrinkage was minimal and cross-validation estimates compared favorably with derivation estimates from other short-form studies.
Minnesota Multiphasic Personality Inventory (MMPI) scales were used to predict psychiatric ratings in two male and two female groups of adult state psychiatric hospital inpatients. The resulting regression coefficients were cross-validated on the other same-sex group using MMPI, MMPI-168, and Faschingbauer Abbreviated MMPI (FAM) scales as predictors. The validity coefficients obtained in this manner were generally small and similar across MMPI forms. There was a trend for MMPI-based predictions to be superior to those of the short forms as the validity coefficients grew larger. This finding suggested caution in the use of the MMPI-168 and FAM as substitutes for the full MMPI. A suggestive for blending realism and rigor in future research is offered.
K-corrected MMPI-168 scales using short and long form K scales (N = 2439). The latter increased the correlation between abbreviated and standard scales in most instances. Because using the entire K scale involves the addition of only 18 items to the MMPI-168 while it generally improves the statistical validity of several scales in addition to K, this was proposed as a cost-effective means of improving the MMPI-168.
A questionnaire on teaching of the MMPI was sent to all APA-approved clinical training programs. The questionnaire asked the faculty member primarily responsible for teaching the MMPI to indicate how much emphasis was placed on it, how they made use of it, and how valuable it was felt to be. A return rate of 83% was achieved. It was found that: a) 92% of the responding programs offer courses dealing with the MMPI; b) 74% of the programs that teach the MMPI put major emphasis on it; c) emphasis placed on the instrument is holding steady; d) instructors with 10 years or less teaching experience rate the test as highly and are as likely to use it outside the classroom as their more experienced colleagues.
The ability of the Faschingbauer Abbreviated MMPI (FAM) and the MMPI-168 to substitute for the full Minnesota Multiphasic Personality Inventory (MMPI) in broad psychiatric diagnosis was examined in a sample of 514 psychiatric inpatients. Each sex was randomly divided and multiple discriminant functions derived using long form scales as predictors. The discriminant functions were cross-validated on the other same-sex group using long and short form scales as predictors. All three forms achieved a 46% "hit" rate overall. No significant differences among the three forms were found.
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