The anatomy of sentiment-driven fluctuations

Sushant Acharya, Jess Benhabib, Zhen Huo

    Research output: Contribution to journalArticlepeer-review


    We show that sentiments - self-fulfilling changes in beliefs that are orthogonal to fundamentals - can drive persistent aggregate fluctuations under rational expectations in a beauty-contest game. Such fluctuations can occur even in the absence of exogenous aggregate fundamental shocks. Moreover, sentiments alter the volatility and persistence of aggregate outcomes in response to fundamental shocks. We provide (i) necessary conditions under which sentiments can affect aggregate outcomes in equilibrium and (ii) conditions under which sentiments drive persistent fluctuations and when they only affect aggregate outcomes contemporaneously. We also show that sentiment equilibria are stable under least-squares learning while the fundamental equilibrium is not.

    Original languageEnglish (US)
    Article number105280
    JournalJournal of Economic Theory
    StatePublished - Jul 2021


    • Dynamic signal extraction
    • Endogenous information
    • Sentiments

    ASJC Scopus subject areas

    • Economics and Econometrics


    Dive into the research topics of 'The anatomy of sentiment-driven fluctuations'. Together they form a unique fingerprint.

    Cite this