Blundell, R.;
Low, H.;
Preston, I.;
(2008)
Decomposing changes in income risk using consumption data.
(IFS Working Papers
W08/13).
Institute for Fiscal Studies: London, UK.
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Abstract
This paper concerns the decomposition of income risk into permanent and transitory components using repeated cross-section data on income and consumption. Our focus is on the detection of changes in the magnitudes of variances of permanent and transitory risks. A new approximation to the optimal consumption growth rule is developed. Evidence from a dynamic stochastic simulation is used to show that this approximation can provide a robust method for decomposing income risk in a nonstationary environment. We examine robustness to unobserved heterogeneity in consumption growth and to unobserved heterogeneity in income growth. We use this approach to investigate the growth in income inequality in the UK in the 1980s.
| Type: | Working / discussion paper |
|---|---|
| Title: | Decomposing changes in income risk using consumption data |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | http://dx.doi.org/10.1920/wp.ifs.2007.0813 |
| Language: | English |
| Keywords: | JEL classification: C30, D52, D91. Income risk, inequality, approximation methods, consumption |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Economics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/14796 |
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