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Solving and Simulating Models with Heterogeneous Agents and Aggregate Uncertainty

Updated on 15 November 2016 Published


Algan Yann, Allais Olivier, Den Haan Wouter J., Rendahl Pontus. In: Handbook of Computational Economics Volume 3, 2014, Pages 277–324.


Although almost nonexistent 15 years ago, there are now numerous papers that analyze models with both aggregate uncertainty and a large number—typically a continuum—of heterogeneous agents. These models make it possible to study whether macroeconomic fluctuations affect different agents differently and whether heterogeneity in turn affects macroeconomic fluctuations. This chapter reviews different algorithms to solve and simulate these models. In addition, it highlights problems with popular accuracy tests and discusses more powerful alternatives.