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Non-Deteriorating Choice

  • BOSSERT, Walter
  • SPRUMONT, Yves

We analyze an alternative to the standard rationalizability requirement for observed choices by considering non-deteriorating selections. A selection function is a generalization of a choice function where selected alternatives may depend on a reference (or status quo) alternative in addition to the set of feasible options. A selection function is non-deteriorating if there exists an ordering over the universal set of alternatives such that the selected alternatives are at least as good as the reference option. We characterize non-deteriorating selection functions in an abstract framework and in an economic environment.

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File URL: http://hdl.handle.net/1866/342
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Paper provided by Universite de Montreal, Departement de sciences economiques in its series Cahiers de recherche with number 2001-01.

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Length: 18 pages
Date of creation: 2001
Date of revision:
Handle: RePEc:mtl:montde:2001-01
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  1. Bossert, Walter & Sprumont, Yves, 2000. "Core Rationalizability in Two-Agent Exchange Economies," Working Papers 2000-07, Rice University, Department of Economics.
  2. Sen, Amartya K, 1971. "Choice Functions and Revealed Preference," Review of Economic Studies, Wiley Blackwell, vol. 38(115), pages 307-17, July.
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