A number of hypotheses have been proposed to account for the role of lagged inflation in the New Keynesian price-adjustment model: (1) In the aftermath of abrupt structural change, rational learning may appear adaptive. (2) The model may have a serially correlated error term. (3) Estimating the...

The New Keynesian sticky-price model has become increasingly popular for monetary-policy analysis. However, there have been conflicting results on the empirical performance of the model. In this paper, I attempt to reconcile these conflicting claims by examining various specifications of the...