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Other scholars have tied Hart's requirement of principled reasoning to the wider "postwar liberal project associated with Robert Dahl and John Rawls" as well as with the work of John Hart Ely and Ronald Dworkin.
A focus on studying political behavior, rather than institutions or interpretation of legal texts, characterized early behavioral political science, including work by Robert Dahl, Philip Converse, and in the collaboration between sociologist Paul Lazarsfeld and public opinion scholar Bernard Berelson.
In 1946 and 1947, prominent Public Administration scholars such as Robert Dahl, Dwight Waldo, and Herbert A. Simon released articles and books criticising POSDCORB and the principles notion.