Choice and individual welfare

Christopher Chambers and Takashi Hayashi

Journal of Economic Theory, 2012, vol. 147, issue 5, 1818-1849

Abstract: We propose an abstract method of systematically assigning a “rational” ranking to non-rationalizable choice data. Our main idea is that any method of ascribing welfare to an individual as a function of choice is subjective, and depends on the economist undertaking the analysis. We provide a simple example of the type of exercise we propose. Namely, we define an individual welfare functional as a mapping from stochastic choice functions into weak orders. A stochastic choice function (or choice distribution) gives the empirical frequency of choices for any possible opportunity set (framing factors may also be incorporated into the model). We require that for any two alternatives x and y, if our individual welfare functional recommends x over y given two distinct choice distributions, then it also recommends x over y for any mixture of the two choice distributions. Together with some mild technical requirements, such an individual welfare functional must weight every opportunity set and assign a utility to each alternative x which is the sum across all opportunity sets of the weighted probability of x being chosen from the set. It therefore requires us to have a “prior view” about how important or representative a choice of x at a given situation is.

Keywords: Choice; Welfare; Individual welfare functional; Behavioral welfare (search for similar items in EconPapers)
JEL-codes: D03 D11 D61 (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (8)

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Working Paper: Choice and individual welfare (2008)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jetheo:v:147:y:2012:i:5:p:1818-1849

DOI: 10.1016/j.jet.2012.01.013

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