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3. Broughton, J.M. 1981. “Adolescent Self, Logic, Morality and Identity”. Unpublished manuscript, Columbia University.
4. Broughton, J.M. 1969. “‘College Regression’: Analysis of Facts and Theories”. Unpublished manuscript, Harvard University.
5. Kohlberg, L. et al. 1975. “Moral Development in Adulthood and Aging”. Unpublished research proposal, Harvard University.