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The Review of Economics and Statistics Vol. 107 No. 1 2025

Peer Advice on Financial Decisions: A Case of the Blind Leading the Blind?

Sandro Ambuehl1; B. Douglas Bernheim2; Fulya Ersoy3; Donna Harris4

1 University of Zurich · 2 Stanford University · 3 University of Chicago · 4 University of Oxford

open access

Abstract

We investigate the impact of peer interaction on the quality of financial decision making in a laboratory experiment. Face-to-face communication with a randomly assigned peer significantly improves the quality of subsequent private decisions even though simple mimicry would have the opposite effect. We present evidence that the mechanism involves general conceptual learning (because the benefits of communication extend to previously unseen tasks), and that the most effective learning relationships are horizontal rather than vertical (because people with weak skills benefit most when their partners also have weak skills). The benefits of demonstrably effective financial education do not propagate to peers.

DOI
10.1162/rest_a_01269
Volume
107
Issue
1
Pages
240-255
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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