Capturing the complexity of human behavior has been a recurring theme in the Nebraska Symposium on Motivation. The contributors to this volume describe contemporary approaches to the modeling of complex cognitive and behavioral processes, ranging from molecular to molar phenomena. Although the essays reflect a wide range of theoretical and epistemic perspectives, they all incorporate complex frameworks of dynamic, systemlike relationships involving perception, learning, concept formation, emotion, motivation, intention, behavior, and the social context in which behavior occurs.The editors...