This book examines emerging developments in the decision support system (DSS) field as it enters its third decade. The book is based on the NATO Advanced Study Institute on Recent Developments in Decision Support Systems held in Italy in June 1991. The contributors are an international assortment of active DSS researchers who offer diverse perspectives on DSSs and examine recent advances in the field. There are four major parts to the book. Part 1 is concerned with DSS foundations, including concepts, theories, frameworks and models. Part 2 examines DSS development in terms of tools and methods for building DSSs. Part 3 is concerned with DSS usage and evaluation. Part 4 concludes with presentations of specific DSS applications. Researchers, graduate students and practitioners in the DSS field will find that the book provides a stimulating and current treatment of DSS topics, helping to usher in the next decade of DSS advances.