Linear versus Nonlinear Macroeconomies: A Statistical Test
A statistical test based on the estimated bispectrum is presented, which can distinguish between the linear stochastic dynamics widely used in macroeconomic models and alternative nonlinear dynamic mechanisms, including both nonlinear stochastic models and nonlinear deterministic (chaotic) models. The test is applied to an aggregate stock market index and to an aggregate industrial production index. In both cases, the test easily rejects the null hypothesis of a linear stochastic generating mechanism. This result strongly suggests that nonlinear dynamics (deterministic or stochastic) should be an important feature of any empirically plausible macroeconomic model. Copyright 1989 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.
Volume (Year): 30 (1989)
Issue (Month): 3 (August)
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