A cost-effective means of improving the statistical validity of an MMPI short form.

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.