Contents: Preface. Part I: Historical and Conceptual Perspectives on Development and Relationships.W.A. Collins, Willard W. Hartup and the New Look in Social Development. W.W. Hartup, B. Laursen, Relationships as Developmental Contexts: Retrospective Themes and Contemporary Issues. C.F.M. van Lieshout, A.H.N. Cillessen, G.J.T. Haselager, Interpersonal Support and Individual Development. Part II: Developmental Perspectives on Close Relationships With Peers.A.F. Newcomb, W.M. Bukowski, C.L. Bagwell, Knowing the Sounds: Friendship as a Developmental Context. T.J. Berndt, Friends' Influence on Children's Adjustment to School. D.C. French, K. Setiono, J.M. Eddy, Bootstrapping Through the Cultural Comparison Minefield: Childhood Social Status and Friendship in the United States and Indonesia. W. Furman, Friends and Lovers: The Role of Peer Relationships in Adolescent Romantic Relationships. Part III: Familial Relationships and Links to Other Relationships.E.E. Maccoby, The Uniqueness of the Parent-Child Relationship. E.M. Hetherington, Social Capital and the Development of Youth From Nondivorced, Divorced, and Remarried Families. R.D. Parke, R. O'Neil, Social Relationships Across Contexts: Family-Peer Linkages. L.A. Sroufe, B. Egeland, E.A. Carlson, One Social World: The Integrated Development of Parent-Child and Peer Relationships. J. Dunn, Siblings, Friends, and the Development of Social Understanding. G.B. DeHart, Conflict and Averted Conflict in Preschoolers' Interactions With Siblings and Friends. Part IV: Development and Relationships: Retrospect and Prospect.E. Berscheid, Commentary: Integrating Relationship Knowledge. C.U. Shantz, Commentary: Development, Modalities, and Relationships. R.A. Hinde, Commentary: Aspects of Relationships in Child Development. B. Laursen, An Annotated Hartup: Developmental History in a Personal Context.