We discuss properties of alternatives or complements to GDP as a measure of welfare at business cycle frequencies. We argue that these figures are not useful to measure the welfare costs of business cycles. First, data is not available at an appropriate quality and frequency. Second, since the...

The paper discusses some widely used methods for estimating output gaps based on aggregated datafor the Euro-zone. Though these methods exhibit some common features, an empirical comparisondemonstrates that the various techniques differ substantially. In particular, the correlation of output...