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Assortative Matching and Search

Open access
Shimer, Robert, Smith, Lones·2000·Econometrica

Abstract

In Becker's (1973) neoclassical marriage market model, matching is positively assortative if types are complements: i.e. match output f(x, y) is supermodular in x and y. We reprise this famous result assuming time-intensive partner search and transferable output. We prove existence of a search equilibrium with a continuum of types, and then characterize matching. After showing that Becker's conditions on match output no longer suffice for assortative matching, we find sufficient conditions valid for any search frictions and type distribution: supermodularity not only of output f , but also of log f x and log f xy . Symmetric submodularity conditions imply negatively assortative matching. Examples show these conditions are necessary.

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Metadata

Authors
Shimer, R., & Smith, L.
Venue
Econometrica
Published
2000-03
Volume
68
Issue
2
Pages
343-369
ISSN
  • 0012-9682 (ISSN-L)
  • 1468-0262
OpenAlex
W2155424087
Cited by
761
References
0
FWCI
33.10
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Assortative Matching and Search. https://app.cochat.ai/papers/10.1111/1468-0262.00112
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Shimer, R., & Smith, L. (2000). Assortative Matching and Search. Econometrica. https://doi.org/10.1111/1468-0262.00112

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