The Wrong Shape of Insurance? What Cross-Sectional Distributions Tell Us about Models of Consumption Smoothing

Tobias Broer
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Tobias Broer: Stockholm University

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Abstract: This paper shows how two standard models of consumption risk-sharing—self-insurance through borrowing and saving and limited commitment to insurance contracts—replicate similarly well the standard, second-moment measures of insurance observed in US micro data. A nonparametric analysis, however, reveals strongly contrasting and counterfactual joint distributions of consumption, income and wealth. Method of moments estimation shows how measurement error in consumption eliminates excessive skewness and smoothness of consumption growth. Moreover, counterfactual nonlinearities disappear at high-estimated risk aversion under self-insurance, but are a robust feature of limited commitment. Its "shape of insurance" thus argues in favor of the self-insurance model. (JEL D14, D81, D91, G22, E21)

Date: 2013-10
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Published in American Economic Journal: Macroeconomics, 2013, 5 (4), pp.107-140. ⟨10.1257/mac.5.4.107⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-04490051

DOI: 10.1257/mac.5.4.107

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