6 "hyperaggressive" or "acting out" boys, in a residential treatment center (NIMH) were observed for a year and a half as regards the interactive process between them and a peer group and adults. The observations were coded on the basis of 2 categories, initially discussed by Freeman dan Leary in 1951: hostility-friendliness and passive-dominant activity. The boys did change, particularly with regard to the adults, and in the direction of showing less dominant reactions and more friendly compliance. The meaning of the results are discussed extensively.