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Quarterly Journal of Economics Vol. 102 No. 4 1987

Are Output Fluctuations Transitory?

John Y. Campbell; N. Gregory Mankiw

Abstract

According to the conventional view of the business cycle, fluctuations in output represent temporary deviations from trend. The purpose of this paper is to question this conventional view. If fluctuations in output are dominated by temporary deviations from the natural rate of output, then an unexpected change in output today should not substantially change one's forecast of output in, say, five or ten years. Our examination of quarterly postwar United States data leads us to be skeptical about this implication. The data suggest that an unexpected change in real GNP of 1 percent should change one's forecast by over 1 percent over a long horizon.

DOI
10.2307/1884285
Volume
102
Issue
4
Pages
857
Sources
crossref openalex

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