A study examined the reliability and predictive validity of a number of measures designed for the vocational assessment of schizophrenic persons. Also examined in the longitudinal study were the relationships of these measures to each other and to employment status. Eighty-nine of the subjects who had participated in an earlier vocational assessment project and who had attended rehabilitation programs at the Community Mental Health Center of Rutgers Medical School were contacted for a one-year followup study. This longitudinal assessment included the compilation of biographical data (sex, age, education, religion, employment status, and race); a complete employment history; and administration of several instruments (the Modified Rosenberg Self-Esteem Scale, the SCL-90, the Work Related Activities Scale, the Katz Social Adjustment Scale, and Bellak's Ego Functioning Scale). Based on the results of various regression techniques, all of the measures (with the exception of the SCL-90) were found to be valid and reliable. In addition, self-esteem was found to be an important variable in the rehabilitation process. The findings of the project suggest several ways that the vocational assessment process and rehabilitation programs could be improved. (The second part of this report is available separately through ERIC--see note.) (MN)