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Public choice in economic theory is the use of modern economic tools to study problems that are...

Public choice in economic theory is the use of modern economic tools to study problems that are traditionally in the province of political science. From the perspective of political science, it may be seen as the subset of positive political theory which deals with subjects in which material interests are assumed to predominate. In particular, it studies the behavior of politicians and government officials as mostly self-interested agents and their interactions in the social system either as such or under alternative constitutional rules. These can be represented a number of ways, including standard constrained utility maximization, game theory, or decision theory. Public choice analysis has roots in positive analysis ("what is") but is often used for normative purposes ("what ought to be"), to identify a problem or suggest how a system could be improved by changes in constitutional rules. Another related field is social choice theory. The modern literature in Public Choice began with Duncan Black, who in 1948 identified the underlying concepts of what would become median voter theory. He also wrote The Theory of Committees and Elections in 1958. Gordon Tullock refers to him as the