Consistent Pareto improvement over the student-optimal stable mechanism

Battal Dogan and M. Bumin Yenmez

Economic Theory Bulletin, 2020, vol. 8, issue 1, No 11, 125-137

Abstract: Abstract We show that there is no consistent Pareto improvement over any stable mechanism. We introduce the following weakly consistent Pareto improvement (over the student-optimal stable matching) requirement: whenever a set of students, each of whom is assigned to a school that is underdemanded at the student-optimal stable matching, is removed with their assigned seats, then the assignments of the remaining students do not change. Our main result is that the efficiency-adjusted deferred acceptance mechanism (Kesten in Q J Econ 125(3):1297–1348, 2010) is the unique weakly consistent Pareto improvement over the student-optimal stable mechanism.

Keywords: Market design; School choice; Consistency; Weak consistency; EADAM (search for similar items in EconPapers)
JEL-codes: C78 D61 D78 I20 (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s40505-019-00172-6

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