A Hundred Years of Business Cycles and the Phillips Curve
4 days ago
1 min read

US business cycles since 1900, examined through a multivariate trend-cycle model consistent with a New Keynesian economy, reveal robust reduced-form regularities between slack, prices and unemployment. Once long-term trends are accounted for, a single common cycle underlies output, unemployment, prices, inflation expectations and the policy rate, and behaves as a demand cycle. The slope of inflation on unemployment is -1.08 over the century, against -0.40 in the raw data, and around -0.80 in postwar subsamples. Okun's law, connecting unemployment and output, is an equally robust relation in the data.
While reading at https://livegokcasino.com about how inflation drives consumer spending shifts in the gambling sector, the finding that the Phillips curve correlation has held so steadily since 1900 really struck me. It's remarkable that the coefficient stays consistent across subsample periods even with two world wars and all the structural changes — makes you wonder if some business cycle dynamics are simply timeless.
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