Contents: R.H. Wozniak, K.W. Fischer, Development in Context: An Introduction. Part I:Ecosystems, Affordances, Transactions, and Skills: Theories of Person/Situation Interaction.U. Bronfenbrenner, The Ecology of Cognitive Development: Research Models and Fugitive Findings. E.S. Reed, The Intention to Use a Specific Affordance: A Conceptual Framework for Psychology. R.H. Wozniak, Co-Constructive Metatheory for Psychology: Implications for an Analysis of Families as Specific Social Contexts for Development. K.W. Fischer, D.H. Bullock, E.J. Rotenberg, P. Raya, The Dynamics of Competence: How Context Contributes Directly to Skill. Part II:Context and the Acquisition of Sociocultural Knowledge.B. Rogoff, Children's Guided Participation and Participatory Appropriation in Sociocultural Activity. R.M. Downs, L.S. Liben, Mediating the Environment: Communicating, Appropriating, and Developing Graphic Representations of Place. N. Granott, Patterns of Interaction in the Co-Construction of Knowledge: Separate Minds, Joint Effort, and Weird Creatures. Part III:Social Systems as Specific Contexts for Development.I.E. Sigel, E.T. Stinson, M-I. Kim, Socialization of Cognition: The Distancing Model. D.H. Feldman, Cultural Organisms in the Development of Great Potential: Referees, Termites, and the Aspen Music Festival. Part IV:Commentaries.J.A. Meacham, Where Is the Social Environment? A Commentary on Reed. W. Kessen, Rumble or Revolution: A Commentary.