Behavioral welfare economics

This paper discusses several competing proposals for general normative frameworks thatwould encompass non-standard models of choice. Most existing proposals equate welfare with wellbeing. Some assume that well-being flows from the achievement of well-defined objectives, and that those objectives also guide choices; the trick is to formulate a framework in which less-than-completely coherent choice patterns reveal the unobserved objectives. Others are predicated on the contention that well-being, and hence welfare, is directly measurable. Both of those approaches encounter serious conceptual difficulties. An alternative approach, developed by Bernheim and Rangel (2009), defines welfare directly in terms of choice. It entails a generalized welfare criterion that respects choice directly, without requiring any rationalization involving potentially unverifiable assumptions concerning underlying objectives and their relationships to choice. Because useful behavioral theories generally envision a substatial degree of underlying coherence in behavior, that criterion leads to a rich and tractable normative framework.