Communication is both a prerequisite and manifestation of social organization and in this sense several chapters of this volume are aimed to investigate the way vocal communication serves its ultimate function of maintaining social organization. Although manifold parallels exist to vocal communication in birds, additional mechanisms of vocalization are found in primates. Treating the various psychological, ecological, behavioral, and neurobiological aspects of vocalization this book provides an interdisciplinary approach for the understanding of biocommunication in primates including humans. Conceptual as well as methodological considerations are given in a balanced way. The addition of a comprehensive glossary gives an overview also to nonspecialists in this field.