The importance of selection in making up therapeutic groups for children is illustrated by groups of girls less than eight years old and of boys more than eight years old. In the former, the most suitable subjects were cases of social disturbance, with one inhibited and one seriously disturbed child in each group. During

spontaneous activity with individual and communal games, interpretations of one another were given by the members, who thus became auxiliary egos for their fellows. These groups achieved their goals, in contrast to the groups of boys who were hampered by inability to verbalize their problems and by excessive hostility to their families, which became transferred to the groups.