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TEST-RETEST RELIABILITY OF NEW MMPI

Abstract

This study investigated the new MMPI test-retest reliability and the stability of new MMPI high-point code, low-point code, two-point code, and three-point code types. Subjects were 96 psychiatric patients and 87 undergraduate students who took psychology introduction course from June to August in 1992. In the case of test-retest reliability, the student group was ranged from .56 to .88 and the psychiatric patient group was distributed from .38 to .81. It was statistically significant that every scales of both groups were in 1% level except Mf(F) scale(.38) of psychiatric patient group. This research results showed a high correlation comparing with the previous researches. In the case of the stability of new MMPI high-point code, low-point code, two-point code, and three-point code types, undergraduate student group was 30.9%, 66.0%, 40.1%, and 6.9% agreement rate, and the agreement rate of psychiatric patient group was 50.4%, 40.8%, 37.6%, and 7.3% respectively. This research results showed a high agreement rate comparing with the previous researches. Therefore, these research results suggested that new MMPI be more reliable than old MMPI. The implication of the study was discussed.

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