Reconciling consumption inequality with income inequality
AbstractThe rise in within-group consumption inequality in response to the increase in within-group income inequality over the last three decades in the U.S. is puzzling to expected-utility-based incomplete market models. The two-sided lack of commitment models exhibit too little consumption inequality while the standard incomplete markets models tend to predict too much consumption inequality. We show that a model with two-sided lack of commitment and chance attitudes, as emphasized by prospect theory, can explain the relationship and can avoid the systematic bias of the expected utility models. The chance attitudes, such as optimism and pessimism, imply that the households attribute a higher weight to high and low outcomes compared to their objective probabilities. For realistic values of risk aversion and of chance attitudes, the incentives for households to share the idiosyncratic risk decrease. The latter effect endogenously amplifies the increase in consumption inequality relative to the expected utility model, thereby improving the fit to the data.
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Bibliographic InfoPaper provided by Federal Reserve Bank of Minneapolis in its series Working Papers with number 705.
Date of creation: 2013
Date of revision:
Other versions of this item:
- Christian A. Stoltenberg & Vadym Lepetyuk, 2012. "Reconciling consumption inequality with income inequality," Working Papers. Serie AD 2012-19, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
- E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
- D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
- D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
This paper has been announced in the following NEP Reports:
- NEP-ALL-2013-05-19 (All new papers)
- NEP-DGE-2013-05-19 (Dynamic General Equilibrium)
- NEP-UPT-2013-05-19 (Utility Models & Prospect Theory)
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