Age differences in MMPI scale scores from 1,189 psychiatric patients

Abstract
Investigated age-related differences in MMPI scale scores from 1,189 individuals (ages 20 to 64 years) who were applying for psychiatric treatment. All major scales except L, K, D, and SI showed statistically significant age group differences. In general, older patients had higher scores on HS and HY, while younger patients had higher scores on F, PD, PA, PT, SC, MA. These results underscore the importance of the age of the patient in the clinical interpretation of an individual protocol.