DamonW.Early conceptions of positive justice as related to the development of logical operations. Child Development, 1975, 46, 301–312.
2.
KeatingD. P.ClarkL. V.Development of physical and social reasoning in adolescence. Developmental Psychology, 1980, 16, 23–30.
3.
PlattJ. J.SpivackG.Manual for the Means-Ends Problem-Solving Procedure (MEPS). Philadelphia: Department of Mental Health Services, Hahnemann Community Mental Health/Mental Retardation Center, 1975.
4.
SpivackG.PlattJ. J.ShureM. B.The problem-solving approach to adjustment. San Francisco: Jossey-Bass, 1976.