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Caria, Stefano and Fafchamps, Marcel (2020) Can people form links to efficiently access information? Economic Journal, 130 (631). pp. 1966-1994. doi:10.1093/ej/ueaa064
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Official URL: https://doi.org/10.1093/ej/ueaa064
Abstract
We investigate how individuals form social connections to access information. In our link formation game of one-way-flows, the myopic best response is to link to the node with the highest informational reach, which depends on indirect links. This strategy leads to the efficient circle network. We find that myopic best response predicts the links that subjects form. However, some subjects target high-degree nodes instead, neglecting indirect connections. This reduces network efficiency. We obtain similar findings when subjects link to transfer information to others. Using a minimal group treatment, we also find evidence of in-group homophily in link formation.
| Item Type: | Journal Article | |||||||||
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| Subjects: | H Social Sciences > HB Economic Theory H Social Sciences > HM Sociology |
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| Divisions: | Faculty of Social Sciences > Economics | |||||||||
| Library of Congress Subject Headings (LCSH): | Economics -- Sociological aspects, Business networks -- Mathematical models, Social networks -- Mathematical models, Game theory, Social groups -- Mathematical models, Network analysis (Planning) | |||||||||
| Journal or Publication Title: | Economic Journal | |||||||||
| Publisher: | Oxford University Press | |||||||||
| ISSN: | 0013-0133 | |||||||||
| Official Date: | October 2020 | |||||||||
| Dates: |
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| Volume: | 130 | |||||||||
| Number: | 631 | |||||||||
| Page Range: | pp. 1966-1994 | |||||||||
| DOI: | 10.1093/ej/ueaa064 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | This is a pre-copyedited, author-produced version of an article accepted for publication in Economic Journal following peer review. The version of record A Stefano Caria, Marcel Fafchamps, Can People Form Links to Efficiently Access Information?, The Economic Journal, , ueaa064 is available online at: https://doi.org/10.1093/ej/ueaa064 | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Copyright Holders: | © 2020 Royal Economic Society. Published by Oxford University Press | |||||||||
| RIOXX Funder/Project Grant: |
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