Knowledge and Representation: The Acquisition of Knowledge in Infancy; G.E. Butterworth. On Neonatal Competence: Sleepless Nights for Representational Theorists? A. Costall. From Perception to Conception; J. Mandler. Reply to Commentaries; G.E. Butterworth. Mechanisms of Developmental Progression; L.A. Venger. Sociocultural Issues in Soviet Psychological Research; J.V. Wertsch. Mechanisms for the Translation and Communication of Developmental Theory; M.C. Boyes. Reply to Commentaries; L.A. Venger. Theory Integration versus Theory Selection in Developmental Psychology; J.J. Vonèche, E. Aewschlimann. Paradigm, Paraphrase, Paralogia, Paralysis: All in the Name of Science; B. Kaplan. Theory Building as Communication; J.A. Meacham. Culture and Human Development: A Coconstructionist Perspective; J. Valsiner Blowing Up a Growing Trend of Building a New Theory? I. Vari-Szilagyi. Human Development and the Reconstruction of Culture; S. McNaughton. The Mutual Construction of Asymmetries; I. Marková. Co-constructionism: What Is (and Is Not) in a Name? J. Valsiner. Index. Contents of Previous Volumes.