The Origins and Nature of Sociality.Based on a symposium held in January 2001.Edited byRobert W Sussmanand, Audrey R Chapman.Hawthorne (New York): Aldine de Gruyter. $65.95 (hardcover); $32.95 (paper). xii + 340 p; ill.; index. ISBN: 0–202–30730–1 (hc); 0–202–30731–X (pb). 2004.