An examination of policy studies in the twentieth century shows that there has been a movement away from an earlier concern for a policy science of democracy. Traditionally, political scientists in the United States have wanted to do good, and for most of them, doing good has meant studying regimes and the state in order to promote liberal democracy. During the development of the policy studies movement, research focused on broad economic and social factors that were seen as prerequisites for democracy. In the 1960s and 1970s, however, political scientists concerned with policy science shifted their focus away from structures, institutions and norms, to the positivist and more behaviorist emphasis on the individual and the group. They turned away from comparative analysis, and instead concentrated on narrow and domestic issues, looking to other social sciences such as economics, sociology, and psychology for theoretical and methodological models. These trends detracted from the policy sciences and the promotion of liberal democracy. There is a need in the field of policy studies to reconceptualize the values around which much of its research and analysis revolves--equality, equity, political participation, efficiency, productivity, and rationality. There must be a return to a broader focus and a policy science of democracy, and epistemologies and methodologies must be clarified. Seventy-two references are listed. (AS)