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Asymmetries in Peer Effects

Aristide Houndetoungan, Mathieu Lambotte

arXiv 10 Aug 2026 · Econometrics

arXiv:2608.09219 · PDF · Extracted main text

Abstract

Individuals are often influenced by their peers because deviating from prevailing behavior entails social costs. However, existing peer effects models typically assume that individuals respond similarly to peers who perform better or worse than they do. This paper introduces a novel structural model of asymmetric peer effects in which conformity incentives depend on whether individuals perform below or above each of their peers. We establish that the model admits a unique equilibrium and show that its parameters can be identified and estimated through simple moment conditions. Applying our method to several student outcomes, we uncover strong evidence of asymmetries in peer effects. We then demonstrate that these asymmetries are highly policy-relevant by studying targeted interventions under budget constraints. Ignoring asymmetries leads to inefficient treatment allocation and substantial welfare losses, reducing welfare to levels comparable to those in a benchmark without social interactions.

Citation extraction

46
references
81
in-text mentions
46
distinct cited
4
self-citations
13,173
main-text words

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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Blume, Lawrence E. and Brock, William A. and Durlauf, Steven N. and… (2015) Linear Social Interactions Models1.00073100%
2Boucher, Vincent and Rendall, Michelle and Ushchev, Philip and Zenou… (2024) Toward a general theory of peer effects1.00064100%
3Galeotti, Andrea and Golub, Benjamin and Goyal, Sanjeev (2020) Targeting interventions in networks0.92843100%
4Bramoullé, Y. and Djebbari, H. and Fortin, B (2009) Identification of peer effects through social networks0.87482100%
5Eyo I. Herstad and Aristide Houndetoungan and Myungkou Shin (2026) Identification of Heterogeneous Peer Effects self0.73732100%
6Kleibergen, Frank and Paap, Richard (2006) Generalized reduced rank tests using the singular value decomposition0.73732100%
7Chernozhukov, Victor and Chetverikov, Denis and Demirer, Mert and Du… (2018) Double/debiased machine learning for treatment and structural parameters0.64422100%
8Manski, F. C (1993) Identification of endogenous social effects: The reflection problem0.64422100%
9Akerlof, George (1997) Social Distance and Social Decisions0.64422100%
10Boucher, Vincent and Fortin, Bernard (2015) Some challenges in the empirics of the effects of networks0.51121100%

Showing the top 10 of 46 scored citations.