GARP, SEPARABILITY, AND THE REPRESENTATIVE AGENT

Adrian R. Fleissig, Alastair Hall and John Seater ()

Macroeconomic Dynamics, 2000, vol. 4, issue 3, 324-342

Abstract: We examine whether annual, quarterly, and monthly U.S. aggregate consumption data could have been generated by a utility-maximizing representative agent with intertemporally separable utility. The model appears inapplicable over the full time periods covered by the NIPA data, which are the sample periods often used in the literature. The model does appear applicable, however, over long subsamples. The data also are inconsistent with separability assumptions routinely made in the literature. In particular, the main categories of consumption (nondurables, services, and durables) are not mutually separable. We consider the implications of our results for inference about consumption based on the representative-agent model.

Date: 2000
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