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A modified version of Arrow’s IIA condition

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  • E. Maskin

    (Harvard University
    Higher School of Economics)

Abstract

I propose a modified version of Arrow's independence of irrelevant alternatives condition (IIA). The new version preserves the most attractive feature of traditional IIA, viz., that it rules out vote-splitting in elections (in which two or more popular candidates split the vote, allowing a relatively unpopular candidate to win). Moreover, it permits election outcomes to reflect voters' preference intensities, unlike the traditional condition.

Suggested Citation

  • E. Maskin, 2020. "A modified version of Arrow’s IIA condition," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 54(2), pages 203-209, March.
    • Handle: RePEc:spr:sochwe:v:54:y:2020:i:2:d:10.1007_s00355-020-01241-7
    DOI: 10.1007/s00355-020-01241-7
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    References listed on IDEAS

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    1. Kenneth J. Arrow, 1950. "A Difficulty in the Concept of Social Welfare," Journal of Political Economy, University of Chicago Press, vol. 58, pages 328-328.
    2. Satterthwaite, Mark Allen, 1975. "Strategy-proofness and Arrow's conditions: Existence and correspondence theorems for voting procedures and social welfare functions," Journal of Economic Theory, Elsevier, vol. 10(2), pages 187-217, April.
    3. Gibbard, Allan, 1973. "Manipulation of Voting Schemes: A General Result," Econometrica, Econometric Society, vol. 41(4), pages 587-601, July.
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