One of the goals of stabilization policy is to reduce the output gap—the difference between potential and actual output—during downturns. Potential output, however, is an unobserved variable whose definition can vary. For example, some view potential output as the level of output...

In early May 2018, The Wall Street Journal asked professional forecasters to predict when the next recession would begin. Nearly 6 in 10 answered that the next recession will begin sometime in 2020. If so, the current business expansion will have eclipsed the 1991-2001 expansion as the longest...