The standard loss function counts both positive and negative deviations from the output and inflation targets as losses. But if the sample period is long enough, then output growth in excess of the target, and often also inflation rates that are below target, should be counted as gains instead...

Economists sometimes interpret the failure of a significance test to disconfirm a hypothesis as evidence that this hypothesis is valid. Six examples of this are cited from recent journals. But this is a misinterpretation of what significance tests show. While in general it is correct that every...