1. Richard C. Snyder, “Decision-Making as an Approach to the Study of Politics,” paper prepared for a conference at Northwestern University, June 15–19, 1954.
2. The reader may wish to consult the following selected bibliographical items which deal with basic aspects of concept formation: Ernest Nagel, “Some Problems of Concept and Theory Formation in the Social Sciences,” in Symposium of Science, Language and Human Rights (American Philosophical Association, Eastern Division, 1952). Vol. I, pp. 43–64;
3. Carl G. Hempel, Fundamentals of Concept Formation in Empirical Science (Foundations of the Unity of Science, 1952), Vol. II. No. 7;
4. Herbert Feigl and May Brodbeck (eds.), Readings in Philosophy of Science (New York: Appleton-Century-Crofts, 1953), Secs. IV, VII;
5. Philip Wiener (ed.), Readings in the Philosophy of Science (New York: Scribner, 1953), pp. 443–570.