Batistin, E. and Blundell, R. and Lewbel, A. (2007) Why is consumption more log normal than income? Gibrat's law revisited. (IFS Working Papers W07/08). Institute for Fiscal Studies: London, UK.
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Abstract
Significant departures from log normality are observed in income data, in violation of Gibrat’s law. We identify a new empirical regularity, which is that the distribution of consumption expenditures across households is, within cohorts, closer to log normal than the distribution of income. We explain these empirical results by showing that the logic of Gibrat’s law applies not to total income, but to permanent income and to maginal utility. These findings have important implications for welfare and inequality measurement, aggregation, and econometric model analysis.
| Type: | Working / discussion paper |
|---|---|
| Title: | Why is consumption more log normal than income? Gibrat's law revisited |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | http://www.ifs.org.uk/publications/browse/type/wp |
| Language: | English |
| Keywords: | JEL classification: D3, D12, D91. Consumption, income, lognormal, inequality, Gibrat |
| UCL classification: | UCL > School of Arts and Social Sciences > Faculty of Social and Historical Sciences > Economics |
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