The document discusses the effects of frustration on the aggressive behaviors of emotionally disturbed and normal children with high or low self concepts. Predicted were that greater amounts of verbal and behavioral aggression would be shown by: (1) emotionally disturbed subjects in special education classes than for normal subjects; (2) subjects under conditions of frustration than for subjects in non-frustration conditions; and (3) subjects with measured low self concept than for subjects with high measured self concept. Subjects were 32 emotionally disturbed and 32 normal male children, ages nine or ten. Results show that: (1) a) verbal aggression depends upon an individual's adjustment status, b) direct behavioral expression of aggression is unrelated to an individual's adjustment status; (2) a) verbal aggression shows an inverse association with the experimental treatment conditions, b) differences with respect to behavioral aggression are unrelated to treatment conditions; (3) there is no significant difference in verbal or behavioral aggression for high or low self concept children following frustration; (4) no significant interactions occur on the adjustment status, frustration and self concept level; and (5) children manifesting one type of aggressive response tend not to use the other. (MC/Author)