A Model-Free Definition of Increasing Uncertainty

S. Grant, J. Quiggin

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We present a definition of increasing uncertainty, independent of any notion of subjective probabilities, or of any particular model of preferences.Our notion of an elementary increase in the uncertainty of any act corresponds to the addition of an 'elementary bet' which increases consumption by a fixed amount in the (relatively) 'good' states and decreases consumption by a fixed (and possibly different) amount in the (relatively) 'bad' states.This definition naturally gives rise to a dual definition of comparative aversion to uncertainty.We characterize this definition for a popular class of generalized models of choice under uncertainty.
Original languageEnglish
Place of PublicationTilburg
Number of pages29
Publication statusPublished - 2001

Publication series

NameCentER Discussion Paper


  • uncertainty
  • risk
  • non expected utility theory


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