On the Interpretation of Near Random-Walk Behavior in GNP
NBER Working Paper No. 2364 (Also Reprint No. r1219)
It is shown that GNP will have an autoregressive root very close to unity in a variant of Taylor's (1980a,b) overlapping wage contracts model, for stylized versions of simple money supply rules and plausible values for the model's parameters. In this variant, monetary policy is the only reason for serial correlation in GNP. It is premature, therefore, to conclude, as some authors, have, that the presence of such a root in U.S. GNP is inconsistent with either a stationary natural rate or with nominal shocks playing a major role in the business cycle.
Published: American Economic Review, Vol. 78, No. 1, March 1988, pp. 202-209.
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