 Multiple Equilibria and Persistence in Aggregate FluctuationsNo 3629, NBER Working Papers from National Bureau of Economic Research, Inc Abstract: This paper explores the impact of incomplete markets and strong complementarities on the time series properties of aggregate activity. We consider an economy which consists of a large number of industries whose production functions both are nonconvex and exhibit localized technological complementarities. The productivity of each industry at t is determined by the production decisions of technologically similar industries at t - 1. No markets exist to coordinate production decisions. This feature implies that aggregate output dynamics for the model are quite different from those predicted by the associated Arrow-Debreu economy. First, multiple stochastic equilibria exist in aggregate activity. These equilibria are distinguished by differences in the mean and the variance of output. Second, output movements are persistent as aggregate productivity shocks indefinitely affect real activity by shifting the economy across equilibria. As a result, the model can exhibit periods of boom and depression. Date: 1991-02 Published as The American Economic Review, Vol. 81, No. 2, pp.70-74, (May 1991). Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:nbr:nberwo:3629 Ordering information: This working paper can be ordered from Access Statistics for this paper More papers in NBER Working Papers from National Bureau of Economic Research, Inc National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.. Contact information at EDIRC. |
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