A 60‐item short form of the MMPI with very high content validity and items that appear on both the MMPI and MMPI‐2 was developed and named the MMPI‐TRI. It contains three 20‐item scales—the Subjective Distress, Acting‐Out, and Psychosis scales. These three scales have excellent internal consistency and sufficient independence from each other. An anxiety and depression group of patients, prison inmate group, and a schizophrenic and other psychotic group had the highest mean scores on Subjective Distress, Acting‐Out, and Psychosis, respectively. Correlations with the 13 regular scales of the MMPI and MMPI‐2, their content and supplementary scales, and four other psychometric instruments provided very strong evidence for validity. Norms are provided.

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