This collection of essays shows how chaos concepts have motivated theory, research, and applications in many areas of psychology, from neurophysiology to social psychology. While it includes chaos theory, fractals, and neural nets, its central theme is how dynamical modeling in psychology may provide for a proper balance of unification and diversity throughout the field. The volume provides not so much the technical details of the field, but rather examples of both research and professional applications of the many directions that innovations using this unifying approach can take. It is written at a level accessible to the lay reader, but sufficiently sophisticated to enlighten graduate and upper-level undergraduate students, as well as professionals seeking to employ this approach in psychology.