Tested the value pluralism model, which asserts that people are likely to think about an issue domain in integratively complex ways to the degree that issue domain activates conflicting values that people perceive as (a) important and (b) approximately equally important. The relations between the value hierarchies endorsed by 145 undergraduates (measured by the Rokeach Value Survey) and the policy preferences they expressed on issues designed to activate conflicts between different pairs of basic social/political values (e.g., the question of whether one is willing to pay higher taxes to assist the poor activates a conflict between concern for personal prosperity and social equality). Regression analyses revealed that (a) policy preferences could be best predicted from knowledge of which of the conflicting values Ss deemed more important and (b) the integrative complexity of people's reasoning about policy issues could be best predicted from knowledge of the similarity of the importance rankings of the conflicting values, the mean importance ranking of the 2 conflicting values, and the interaction of these 2 terms. It is concluded that the value pluralism model provides a flexible theoretical framework for predicting Ideology Issue interactions in both the content and structure of policy reasoning. (43 ref) (PsycINFO Database Record (c) 2012 APA, all rights reserved)