"Formal representations of values and norms are employed in several academic disciplines and specialties, such as economics, jurisprudence, decision theory, and social choice theory." "Sven Ove Hansson closely examines such foundational issues as how the values of wholes relate to the values of their parts, the connections between values and norms, how values can be decision-guiding, and the structure of normative codes. Models of changes in both preferences and norms are offered, as well as a new method to base the logic of norms on that of preferences." "Hansson has developed a unified formal representation of values and norms that reflects both their static and their dynamic properties. This treatment, carried out in terms of both informal value theory and precise logical detail, will contribute to the clarification of basic issues in the philosophical theory of values and norms."--BOOK JACKET.