Seminar: Pedro Bordalo – University of Oxford @ Nuffield College - Butler Room
Jan 31 @ 4:00 pm – 5:00 pm

Overreaction in Macroeconomic Expectations (w/ Nicola Gennaioli, Yueran Ma, Andrei Shleifer)

We examine the rationality of individual and consensus professional forecasts of macroeconomic and financial variables using the methodology of Coibion and Gorodnichenko (2015), which focuses on the predictability of forecast errors from earlier forecast revisions.  We document two principal findings: at the individual level, forecasters typically over-react to information, while consensus forecasts exhibit under-reaction.  To reconcile these findings, we combine the diagnostic expectations model of belief formation from Bordalo, Gennaioli, and Shleifer (2018) with Woodford’s (2003) noisy information model of belief aggregation.  The model accounts for the findings, but also yields a number of new implications related to the forward looking nature of diagnostic expectations, which we also test and confirm.  Finally, we compare our model to mechanical extrapolation, rational inattention, and natural expectations.

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