"This seminal book truly deserves to be called the founding text for the growing field of individual-based modeling and the broader program of individual-based ecology. Core procedures and standards for formulating, parameterizing, testing, and communicating such models have long been lacking. Even the basic definitions have been missing. In one stroke, Grimm and Railsback provide all of those things. Thus, individual-based modeling now has a foundation no less firm than the foundation of classical mathematical ecology."--Don DeAngelis, Biological Resources Division, U.S. Geological Survey, and University of Miami; author of "Dynamics of Nutrient Cycling and Food Webs"