psychology "٣rd ed", vol.١, New York: Wiley. ٢١٢- Parke, R.D. & Collmer, C.W.; Dild abuse: An interdisciplinary analysis, "in" E.M. Hetherington "Ed.": Review of child Development Research, Vol. ٥, Chicago: university of Chicago Press, ١٩٧٥. ٢١٣- Parten, M.B.; Social Participation among per-school children. J. of Abnormal social Psychology, ١٩٥٢, ٢٧, ٢٤٣-٢٦٩. ٢١٤- Plomin, R. De Fries, J.C., Mc Clearn, G.E. & Rutter, M.; Behavioral genetics. "٣d.ed", New York. W.H. Freeman, ١٩٩٧. ٢١٥- Pukea, B.; Toward the redevelopment of kohlberg's theory: Preservstructure, remoiving Controversial Content. "In". W.M. Kurtines & J. Gewirtz "Eds.", Moral behavior and development: Advances in theory, research, and application. Hillsdale, H.J. Erlbaum, ١٩٩١. ٢١٦- Rardin, U.R. & Moan, C.E., Peer interaction and cognitive development. Child Development, ١٩٧١, ٤٢, ١٦٨٥-١٦٩٩. ٢١٧- Ratner, N.B.; A typical language development. "In" J.B. Gleason "Ed.", The development of language "٣re ed". New York: Macmillan. ٢١٨- Reese, H. W. & Lipsitt, L. P.; Experimental child Psychology. New York: Wiley, ١٩٧٠. ٢١٩- Rest, J.R.; Moral development: Advances in theory, research, and application, New York: Praeger. ٢٢٠- Rice, M.L.; Children's language acquisitaon. American Psychologyist, ١٩٨٩, ٤٤, ١٤٩-١٥٦. ٢٢١- Roberts, W. & Strayer, J.; Empathy, emotional expressiveness and prosocial behavior. Child development, ١٩٩٦, ٦٧, ٤٧١-٤٨٩. ٢٢٢- Roher, R.P.& Rohner, E.C.; Psrental acceptance-rejection and