In planning vocational rehabilitation, 169 institutionalized deaf retardates (aged 10 to 40) were studied. The 106 males and 63 females were divided into two groups with the median age, 22 years, used as a cutoff point. All received various tests and evaluations. Results indicated that IQ scores ranged from 58 (verbal) to 61 (performance) on the Wechsler with females scoring somewhat lower than males. If sex is disregarded, the older group scored higher than the younger one. The personality tests showed more anxiety in younger patients, with females exhibiting more anxiety and depression than males. No significant relationship between intellectual function and the other diagnostic measures was found. However, patients with the least psychopathology were functioning at the highest intellectual level. No relationship was found between performance IQ and age, sex, age at admission, or length of hospitalization. Achievement tests revealed a mean grade level of 1.9 on arithmetic and 1.7 on reading, with older females performing best. There was wide variability on speech and audiology tests, but younger patients generally performed better on all but the articulation tests, where older females received better scores. (JB)