This volume is based on a conference held at Dartmouth College's Minary Conference Center in Holdemess, New Hampshire, June 4 -7 , 1981. The conference brought together a number of investigators whose separate lines of inquiry bear in significant ways on the relationships among perception, cognition, and development. The purpose was to consider interactions among these basic processes not only as a critical facet of the research programs of the participants but also as a central conceptual problem for current theoretical psychology. First published in 1983. Routledge is an imprint of Taylor & Francis, an informa company.