Assertion training with adolescents.

A month-long assertion training program for adolescents was instituted and evaluated in a middle-school setting. A group of 23 adolescents who received the treatment was compared to a group of 23 adolescents who did not receive the treatment. Although there were no significant differences between the groups prior to the program, the group who received the training significantly improved their scores on the Piers -Harris Children's Self-Concept Scale and the Intellectual Achievement Responsibility Questionnaire by the termination of the program. The group who did not receive any special program showed no change in their scores on these scales. These differences were still present at a seven-week follow-up.