This article provides a survey of the applications of nonlinear dynamical systems theory to substantive problems encountered in the full scope of psychological science. Applications are organized into three topical areas cognitive science, social and organizational psychology, and personality and clinical psychology. Both theoretical and empirical studies are considered with an emphasis on works that capture the broadest scope of issues that are of substantive interest to psychological theory. A budding literature on the implications of NDS principles in professional practice is reported also.Keywords: Nonlinear dynamics; Chaos; Cognition; Organizations; Personality; Psychotherapy; Social psychologyThe purpose of this article is to provide a survey of the recent developments in the application of nonlinear dynamical systems (NDS) theory to theoretical and practical problems encountered in the domain of psychology. For the benefit of nonpsychologists, it is important to note that the scope of psychology is expansive. Introductory textbooks are typically organized around the following themes: brain physiology and behavior, psychophysics, sensation, perception, learning, memory, cognition, intelligence and mental measurement, development, social psychology, motivation and emotion, personality of normal range people, abnormal psychology, psychotherapy and counseling, and industrial-organizational psychology. At the other end of the professional spectrum, the largest professional organization for psychologists, the American psychological Association, contains more than 50 topical interest groups in addition to its general membership core.Only about half of academic psychologists can be found in university psychology departments, according to a recent report (Brookhart, 2000 (Guindani and Salvadori, 1998;Tschacher and Dauwalder, 1999).Each of the foregoing publications unpacks many interesting authors with vibrant lines of research. The prominent themes among them are considered next, but they are not limited to Society publications. The path of least resistance suggests that the specific works in psychology .should be organized into three themes: cognitive science, social organizations, and clinical studies. I will forego a section on neuroscience, largely because of the continuity of that topic with non-psychological studies. Works by Freeman (1995); Basar (1998Basar ( , 1999; Waters (1999); Ferro Milone, Minelli and Turicchia (1998) and Minelli and Turicchia (1999) should be considered significant contributions in that area, however.
COGNITIVE SCIENCE APPLICATIONSCurrent thinking in NDS theory is that consciousness is an integrated process consisting of psychophysics and sensation processes, perception, cognition, learning, memory, and action. Although it has been convenient to think of these processes as separate entities, the separations are somewhat contrived. Similarly, real-world stimuli largely consist of continuous flows and random shocks.Figure displays the set of relationships that are thought to exist amo...