Estimating a Behavioral New Keynesian Model with the Zero Lower Bound

Abstract

We estimate a New Keynesian model incorporating two notable features: bounded rationality and the zero lower bound on the nominal interest rate. Our Bayesian estimation of a fully nonlinear model shows that the model with bounded rationality better fits the US data than its rational expectations counterpart and that both households and firms exhibit a substantial degree of bounded rationality. Moreover, we demonstrate that bounded rationality expands a parameter region in which the model can be estimated and weakens the power of forward guidance.