On the Nature of Expertise: Psychological Characteristics and Strategies of Experts (J. Shanteau). Improving Decisions and Judgements (G. Keren). Reliability and Validity in Expert Judgement (F. Bolger, G. Wright). On the Competence, and Incompetence of Experts (P. Ayton). Epistemic Strategies (L.R. Beach). Sociological Perspectives on the Nature of Expertise (A. Sturdy et al.). Issues in the Interaction of Expertise and Decision Support Systems: Perspectives on Expertise (G. Rowe). Decision Conferencing (P. Reagan, J. Rohrbaugh). Knowledge Engineering Issues for Decision Support (J. Gammack). Human Expertise, Statistical Models and KnowledgeBased Systems (D. A. Clark). Synthesis of Expert Judgement and Statistical Forecasting Models for Decision Support (D. Bunn). Index.