1. Lasswell, H. D., The Future of Political Science (London: Tavistock Publications, 1964), pp. 123?146.
2. In actuality, many of the principles to be outlined were adopted once the sessions began. The seminar lasted only four weeks, governed by the educationally oblivious restrictions of a university summer-quarter system.
3. Lasswell, op. cit. The Future of Political Science (London: Tavistock Publications, 1964), pp. 125?140, and ?The Continuing Decision Seminar as a Technique of Instruction,? Policy Sciences, 2 (March 1971), 43?57; A Pre-View of Policy Sciences (New York: American Elsevier, 1971), pp. 142?157; ?Technique of Decision Seminars,? Midwest Journal of Political Science, 4 (August, 1960), 213?236; ?Decision Seminars: The Contextual Use of Audiovisual Means in Teaching, Research, and Consultation,? in R. L. Merritt, and S. Rokkan (eds.), Comparing Nations: The Use of Quantitative Data in Cross-National Research (New Haven, Conn.: Yale Univer. Press, 1966), pp. 499?524; ?The Significance of Vicos for the Emerging Policy Sciences,? in H. F. Dobyns, P. L. Doughty, and H. D. Lasswell (eds.), Peasants, Power, and Applied Social Change (Beverly Hills, Calif.: Sage Publications, 1971), pp. 179?193; ?The Policy Sciences,? in D. L. Sills (ed.), International Encyclopedia of the Social Sciences, 12 (New York: Macmillan, 1968), 181?189. See also Kemp, D., and Little, G., ?An Interview with H. D. Lasswell,? Melbourne Journal of Politics, 4 (1971), 41?54.
4. See Davies, A. F., ?Criteria for the Political Life History,? Historical Studies (Australia and New Zealand), 13 (October 1967), 76?85.
5. An over-all consideration of the problem of perspective is in Brown, S. R., and Taylor, R. W., ?Frames of Reference and the Observation of Behavior,? Social Science Quarterly, in press. Of the various means for weakening bias, Lasswell (A Pre-View of Policy Sciences, p. 148) suggests critical examination of presentations and the short-term introduction into the seminar of expert witnesses. To these could be added the method, to be illustrated here, of the randomization of the effects of perspective, a procedure introduced into modern experimentation by Fisher, R. A., The Design of Experiments (7th ed. ; New York: Hafner, 1960). An attempt to come to grips with such difficulties, and one related to our procedures, is described in Beck, S. J., ?Differential Judgments by Social Workers: A Q-Technique Research in Families of Schizophrenic Children,? in S. R. Brown and D. J. Brenner (eds.), Science, Psychology, and Communication (New York: Teachers College Press, 1972), pp. 121?140.