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Near-Rational Equilibria in Heterogeneous-Agent Models: A Verification Method

Author

Listed:
  • Leonid Kogan
  • Indrajit Mitra

Abstract

We propose a general simulation-based procedure for estimating quality of approximate policies in heterogeneous-agent equilibrium models, which allows to verify that such approximate solutions describe a near-rational equilibrium. Our procedure endows agents with superior knowledge of the future path of the economy, while imposing a suitable penalty for such foresight. The relaxed problem is more tractable than the original, and results in an upper bound on agents’ welfare. Our method is general, straightforward to implement, and can be used in conjunction with various solution algorithms. We illustrate our approach in two applications: the incomplete-markets model of Krusell and Smith (1998) and the heterogeneous firm model of Khan and Thomas (2008).

Suggested Citation

  • Leonid Kogan & Indrajit Mitra, 2022. "Near-Rational Equilibria in Heterogeneous-Agent Models: A Verification Method," NBER Working Papers 30111, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:30111
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    More about this item

    JEL classification:

    • C02 - Mathematical and Quantitative Methods - - General - - - Mathematical Economics
    • C18 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Methodolical Issues: General
    • C63 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computational Techniques
    • C68 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computable General Equilibrium Models
    • E00 - Macroeconomics and Monetary Economics - - General - - - General
    • E37 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Forecasting and Simulation: Models and Applications
    • G1 - Financial Economics - - General Financial Markets

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