The Psychology of Play Author:Susanna Millar The term "play" has long been used to describe behavior that looks voluntary and seems to have no biological or social use. What counts as "play?" What expectations have been given for it, and are they adequate? Why do children and the young of many animal species play? To answer these questions and more, the author discusses psychological theor... more »ies about play and reviews observational and experimental studies of play, including play in the development of children at different ages.« less