明尼苏达多相人格问卷对青年军人精神分裂症患者的诊断效度

A study of assessing the validity of minnesota multiphasic personality inventory in diagnosing schizophrenes in young soldiers

目的 研究明尼苏达多相人格问卷（MMPI）对青年军人精神分裂症患者与正常新兵的区分效度并筛选鉴别力较高的分量表。方法 MMPI中的3个效度量表和8个临床量表,对40名青年男性军人精神分裂症患者和某部1346名集训期新兵进行测验,将测验结果进行逐步判别分析。结果 总条目的α系数为0.94,各分量表为0.71-0.87。精神分裂症患者效度量表中F显著高于正常男性新兵,L、K低于正常新兵;精神分裂症患者临床量表中除Hy,其余量表均显著高于正常新兵。F、L、Pt和Sc量表得分进入判别方程。判别函数预测精神分裂症患者和正常新兵的正确率分别为57.5%和97.9%,总符合率为96.8%。结论 MMPI对2组被试的区分效度较高,并可根据判别分析的方法简化量表对应征青年进行初步筛选,但结果有待进一步增大样本量继续研究。

Objective To assess the discriminative validity of Minnesota Muhiphasic Personality Inventory （MMPI） between young soldiers with schizophrenia and health recruits, while select scales which have high discriminative validity. Methods 40 schizophrenic young soldiers and 1346 recruits were tested with 3 validity scale and 8 clinical scale of MMPI. The score of all scales were subjected to discriminative analysis. Results The Cronbach＇ sct coefficient of the general item of MMPI is 0.94, each scale is 0.71 - 0.87. In validi- ty scale F of schizophrenes is obviously higher than that of healthy recruits, and L, K is less. The scores of clinical scale of schizophrenes are obviously higher than that of healthy recruits except Hy. Discriminate analysis indicated that F, L, Pt and Sc were the most important variables, and standardized canonical discriminant function is y = 0. 650F -0.286L -0.502Pt ＋0.693Sc. It successfully classified 42.5% and 97.9% respectively in schizophrenic young soldiers and normal recruits, and total coincidence is 96.3%. Conclusion MMPI has a high discrimina- tive validity. Simplified inventory based on the results of discriminant analysis can be used in the screening of recruits. Further study should be performed with a large sample.