50 psychotic depressives, matched to a group of SO normals for age, sex, race, education, religion, and nativity, are compared for performance on WAIS Information and Similarities, and on Thorndike-Gal lup Vocabulary. Intergroup differences are not significant, but the normals tend to score higher on all tests. Pattern of performance is similar for both groups. Weighted information scores are significantly higher than Similarities scores, at the .01 level, for both the normals and depressives. A precipitate drop in quality of performance on the Similarities is found in relation to increasing age within the 2 groups. The age factor is, thus, found to be more potent than depression in producing psychometric deficit, particularly in the area of abstraction and flexibility of thought processes. Availability of systematically collected data on the intellectual functioning of psychotic depressives is sparse. Summaries of research in this area by Hunt and Cofer (1944) and more recently by Payne (1961) indicate that results can be regarded only as tentative and inconclusive since they are based on studies with very small and limited samples. Generally, however, the impression is that cognitive and thinking processes of depressives are not deteriorated or regressed or remarkably different from normals when speed of performance is not a factor and testing conditions are supportive. The present report aims to investigate this impression in terms of the following questions: (a) Do psychotic depressives perform as well as normals on such untimed, verbal intelligence test items as the Wechsler Adult Intelligence Scale (WAIS) Information and Similarities Tests, and the Thorndike-Gallup Vocabulary Test? (b) How do the two groups compare in their interest pattern of functioning? (c) What are the relationships among test performances, age, and education for each group of