In this innovative analysis - the first comprehensive, single-author treatment of the subject in this century - Robert Fagen breaks new ground by adopting an ev

Animal Play, first published in 1998, is an interdisciplinary study of play in animals and humans.

A scientist examines the origins and evolutionary significance of play in humans and animals.

Is it possible that what looks like play is something else entirely? German author Mechtild Käufer presents findings from scores of researchers worldwide who s

Behavior is shaped by both genetics and experience--nature and nurture. This book synthesizes research from behavioral genetics and animal and veterinary scienc