This study investigated the effect of training in general semantics on social adjustment. Acting on the Whorfian Hypothesis that the language structures we use influence our feeling, thinking, and behaving and therefore our social adjustment, the Is of Identity Test and Uncritical Inference Test were used as measures of social adjustment. The subjects were graduate students (average age 30 years) and senior citizens (average age 70 years) who were Donovan Scholars and/or their spouses at the University of Kentucky. There were 60 subjects in all, 15 in each control group and each experimental group. From the experimental evidence, it was concluded that training in general semantics can improve social adjustment for both graduate students and senior citizens; graduate students will benefit more from training in general semantics than will senior citizens; and the personality factor (extroversion or introversion) will probably not have a significant influence on the effect of training in general semantics on the social adjustment as measured by the two tests. (TS)