3Simpkins SD, Parke R,D, Flyr ML,et aI.Similarities in children's and early adolescents'perceptions of friendship qualities across development, gender, and friendship qualities. The Journal of Early Adolescence,2006, 26:491.
4Peter J, Valkenburg PM.Research Note: Individual difference in perceptions of internet communication. European Journal of Communication,2006,21:213.
5Valkenburg PM, Peter d.Adolescent's identity experiments on the internet consequences for social competence and self-concept unity. Communication P, esearch, 2008,7(5) : 583.
