Labour markets have reacted very differently to the COVID-19 crisis. In the US, the impact on unemployment rates was rapid across all states. They increased sharply in March and April 2020 and recovered steadily thereafter. In Europe, by contrast, unemployment increased far less, and the...

This comment points out mismeasurement of three of the variables in the DSGE model in Del Negro, Giannoni, and Schorfheide (2015). These errors began with the model in Smets and Wouters (2007), and they also exist in other models that use the Smets-Wouters model as a benchmark. The...