Risks are an integral part of complex, high-stakes decisions, and decisionmakers are faced with the unavoidable tasks of assessing risks and forming risk preferences. This is true for all decision domains, including financial, environmental, and foreign policy domains, among others. How well decisionmakers deal with risk affects, to a considerable extent, the quality of their decisions. This book provides the most comprehensive analysis available of the elements that influence risk judgments and preferences. The book has two dimensions: theoretical and comparative-historical. The study of risk-taking behavior has been dominated by the rational choice approach. Instead, the author adopts a socio-cognitive approach involving: a multivariate theory integrating contextual, cognitive, motivational, and personality factors that affect an individual decisionmaker s judgment and preferences; the social interaction and structural effects of the decisionmaking group and its organizational setting; and the role of cultural-societal values and norms that sanction or discourage risk taking behavior.