文章基本信息

标题：Income variance dynamics and heterogenity
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作者：Costas Meghir ; Luigi Pistaferri
期刊名称：IFS Working Papers / Institute for Fiscal Studies London
电子版ISSN：1742-0415
出版年度：2001
卷号：2001
期号：1
出版社：Institute for Fiscal Studies London
摘要：Recent theoretical work has shown the importance of measuring microeconomic uncertainty for models of both general and partial equilibrium under imperfect insurance. In this paper the assumption of i.i.d. income innovations used in previous empirical studies is removed and the focus of the analysis placed on models for the conditional variance of income shocks, that is related to the approporiate measure of risk emphasized by the theory. We first discriminate amongst various models of earnings determination that separate income shocks into idiosyncratic transitory and permanent components. We allow for education-specific differences in the stochastic process for earnings and for measurement error. The conditional variance of the income shocks is then modelled as a parsimonious autoregressive process with both observable and unobserved heterogeneity. The empirical analysis is conducted on data drawn from the 1967-1991 Panel Study of Income Dynamics.