The article focuses on the relationship between response to social desirability (SD) and self-concept in chronic schizophrenics was investigated. Hospitalized schizophrenics were given a modified form of the Edwards SD scale and were rated as to mental health status. Four experimental groups of 12 subjects each were then formed representing high and low extremes on each variable. Subjects first were asked to predict their level of performance, and after five trials, to evaluate their performance on a simple letter-digit substitution task.