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Stationary Social Learning in a Changing Environment

Author

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  • Raphaël Levy
  • Marcin Pęski
  • Nicolas Vieille

Abstract

We consider social learning in a changing world. With changing states, societies can be responsive only if agents regularly act upon fresh information, which significantly limits the value of observational learning. When the state is close to persistent, a consensus whereby most agents choose the same action typically emerges. However, the consensus action is not perfectly correlated with the state, because societies exhibit inertia following state changes. When signals are precise enough, learning is incomplete, even if agents draw large samples of past actions, as actions then become too correlated within samples, thereby reducing informativeness and welfare.

Suggested Citation

  • Raphaël Levy & Marcin Pęski & Nicolas Vieille, 2024. "Stationary Social Learning in a Changing Environment," Econometrica, Econometric Society, vol. 92(6), pages 1939-1966, November.
    • Handle: RePEc:wly:emetrp:v:92:y:2024:i:6:p:1939-1966
    DOI: 10.3982/ECTA20475
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    1. Raphaël Levy & Marcin Pęski & Nicolas Vieille, 2024. "Stationary Social Learning in a Changing Environment," Econometrica, Econometric Society, vol. 92(6), pages 1939-1966, November.
    2. Aidt, T. S. & Leon, G. & Satchell, M., 2017. "The Social Dynamics of Collective Action: Evidence from the Captain Swing Riots, 1830-31," Cambridge Working Papers in Economics 1751, Faculty of Economics, University of Cambridge.
    3. Lones Smith & Peter Sorensen, 2000. "Pathological Outcomes of Observational Learning," Econometrica, Econometric Society, vol. 68(2), pages 371-398, March.
    4. Wanying Huang, 2022. "The Emergence of Fads in a Changing World," Papers 2208.14570, arXiv.org, revised Nov 2024.
    5. Krishna Dasaratha & Benjamin Golub & Nir Hak, 2018. "Learning from Neighbors about a Changing State," Papers 1801.02042, arXiv.org, revised Nov 2022.
    6. Xavier Vives, 1993. "How Fast do Rational Agents Learn?," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 60(2), pages 329-347.
    7. Ali, S. Nageeb, 2018. "Herding with costly information," Journal of Economic Theory, Elsevier, vol. 175(C), pages 713-729.
    8. Tapan Mitra & Luigi Montrucchio & Fabio Privileggi, 2003. "The nature of the steady state in models of optimal growth under uncertainty," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 23(1), pages 39-71, December.
    9. Bhattacharya,Rabi & Majumdar,Mukul, 2007. "Random Dynamical Systems," Cambridge Books, Cambridge University Press, number 9780521825658, Enero-Abr.
    10. Marco Ottaviani & Giuseppe Moscarini & Lones Smith, 1998. "Social learning in a changing world," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 11(3), pages 657-665.
    11. Bhattacharya,Rabi & Majumdar,Mukul, 2007. "Random Dynamical Systems," Cambridge Books, Cambridge University Press, number 9780521532723, Enero-Abr.
    12. Abhijit V. Banerjee, 1992. "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 107(3), pages 797-817.
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    Cited by:

    1. Florian Brandl, 2025. "The Social Learning Barrier," Papers 2504.12136, arXiv.org, revised Aug 2025.
    2. Daron Acemoglu & Asuman Ozdaglar & Sarath Pattathil, 2023. "Learning, Diversity and Adaptation in Changing Environments: The Role of Weak Links," NBER Working Papers 31214, National Bureau of Economic Research, Inc.
    3. Raphaël Levy & Marcin Pęski & Nicolas Vieille, 2024. "Stationary Social Learning in a Changing Environment," Econometrica, Econometric Society, vol. 92(6), pages 1939-1966, November.

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    More about this item

    JEL classification:

    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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