Abstract
Crippled adolescents were divided into 2 groups in terms of stability of self-concept, “stable group” and “unstable group”. An experiment on level of aspiration using the substitution task was administered in two situations. Results: (1) In an ego-involved situation, aspiration level and performance level of the groups were higher than in a neutral situation. (2) In the stable group, extreme and unusual goal-setting did not increase in the ego-involved situation as compared to the neutral situation. But, in the unstable group, they did.