Relaxing IIA and the effect on individual power

Donald E. Campbell, Jerry S. Kelly

Research output: Contribution to journalArticlepeer-review


We allow departures from IIA in Arrow's framework. Our measure of the extent of a departure is the amount of information needed to socially order a pair of alternatives. We also propose a measure of the scope of an individual's power. The scope of at least one individual's power increases in step with a reduction in the amount of information that has to be gathered to socially order two alternatives. This result is also established for correspondences, which select a subset of the feasible set as a function of individual preferences.

Original languageEnglish (US)
Pages (from-to)165-181
Number of pages17
JournalReview of Economic Design
Issue number3
StatePublished - Sep 2013


  • Individual power
  • Information gathering
  • Relevant alternatives

ASJC Scopus subject areas

  • General Economics, Econometrics and Finance


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