1Flavell, J. H., & Botkin, P.T., Fry, C. L., Wright,J.W. , & Jarvis, P.E. The development of role - taking and communication skills in children. New York: Wiley,1968.
29.Lawrence A. Kurdek. Generality of Decentering in First through Fourth Grade Children. The Journal of Genetic Psychology, 1979,134:89 - 97.
3Aronfreed, J. M., &Paskal, V. Altruism, empathy, and the conditioning of positive affect. University of Pennsylvania, 1965.
4Michael J. Chandler. Egocentrism and Antisocial Behavior.Developmental Psychology, 1973,3: 326 - 332.
5Shantz, C. U. Social Cognition, In Mussen, P. H.Handbook of child psychology, 1983, Vol. 3, John Willey&Sons.
