Justifiable preferences

Ehud Lehrer*, Roee Teper

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


We characterize preferences over acts that can be represented by a utility function and a multiple-prior, such that an act f is preferred to act g if there is a prior under which the expected utility induced by f is higher than that induced by g. These preferences are referred to as justifiable preferences. We further introduce a generalized model of ambiguity that involves a collection of multiple-priors, namely, multiple multiple-priors and incorporate Bewley's Knightian model in justifiability: f is preferred to g if, according to at least one set of priors, f is unanimously preferred to g.

Original languageEnglish
Pages (from-to)762-774
Number of pages13
JournalJournal of Economic Theory
Issue number2
StatePublished - Mar 2011


  • Justifiable preferences
  • Multiple multiple-prior
  • Multiple-prior


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