The edited book series Studies in Perception and Action contains a collection of research presented at the International Conference on Perception and Action (ICPA). The Studies series has appeared in conjunction with the biennial ICPA since 1991. ICPA provides a forum for presenting new data, theory, and methodological developments relevant to the ecological approach to perceptionaction. This volume is the 9th in the Studies in Perception and Action series, and it contains research presented at the 14th ICPA meeting in the summer of 2007. The sixty papers presented in this volume represent the latest developments in ecological psychology research from four continents. In many instances, the contributions to Studies volumes reflect the first appearance of new ideas in a scientific venue. As a result, the Studies volumes contain the most recent and cutting edge research in perception and action. This volume will appeal to individuals who follow the research literature in ecological psychology, as well as those interested in perception, perceptual development, human movement dynamics, and social processes.