1. Adams, G. R., Bennion, L., & Huh, K. (1989). Objective measure of ego identity status: A reference manual. Available from Gerald Adams, Department of Family Studies, University of Guelph, Guelph, Ont.
2. An overview;Archer,1994
3. Measures of self-esteem;Blascovich,1991
4. A multidimensional approach to individual differences in empathy;Davis;Catalog of Selected Documents in Psychology,1980
5. Insight and responsibility;Erikson,1964