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cemmap Working Papers
October 2006 CWP22/06
Article
A nonparametric analysis of welfare and the economic shocks
Type: cemmap Working Papers
Authors: Nicoletta Rosati
ISSN: 1753-9196
Volume, issue, pages: 27 pp.
Keywords: Heteroskedasticity, income and consumption welfare measures, local polynomial regression, permanent and transitory shocks
Now published in: Economics Bulletin [Details]

The behaviour of the permanent and transitory economic shocks for different levels of households' welfare is studied using both consumption and income measures. After testing for heteroskedasticity of the economic shocks, we use local polynomial regression models to estimate the variance of the shocks conditional on welfare level. Italian data covering the period 1980-2004 show evidence of heteroskedasticity of both the transitory and the permanent economic shocks, with the poor experiencing higher variances. The permanent shocks seem to have a more uniform effect at all welfare levels.

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