The 2009 Lawrence R. Klein Lecture: Diversified Treatment Under Ambiguity
This article develops a broad theme about treatment under ambiguity through study of a particular decision criterion. The broad theme is that a planner may want to cope with ambiguity by diversification, assigning observationally identical persons to different treatments. Study of the minimax-regret (MR) criterion substantiates the theme. The article significantly extends my earlier analysis of one-period planning with an individualistic treatment and a linear welfare function. I show that MR treatment allocations are fractional in a large class of planning problems with nonlinear welfare functions, interacting treatments, learning, and noncooperative aspects. Copyright � (2009) by the Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.
Volume (Year): 50 (2009)
Issue (Month): 4 (November)
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