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| Intergenerational Elasticity× | Gini Coefficient× | |
|---|---|---|
| Field | Sociology | Sociology |
| Family≠ | Regression model | Process / pipeline |
| Year of origin≠ | 1992 | 1912 |
| Originator≠ | Gary Solon (modern estimation) | Corrado Gini |
| Type≠ | Regression-based measure of intergenerational income persistence | Scalar measure of statistical dispersion / inequality |
| Seminal source≠ | Solon, G. (1992). Intergenerational income mobility in the United States. American Economic Review, 82(3), 393–408. link ↗ | Ceriani, L., & Verme, P. (2012). The origins of the Gini index: extracts from Variabilità e Mutabilità (1912) by Corrado Gini. The Journal of Economic Inequality, 10(3), 421–443. DOI ↗ |
| Aliases | IGE, intergenerational income elasticity, intergenerational income persistence, father-son income elasticity | Gini index, Gini ratio, Gini concentration ratio, G |
| Related | 5 | 5 |
| Summary≠ | The intergenerational elasticity of income (IGE) is the workhorse measure of economic mobility: the regression coefficient from regressing a child's adult log income on the parent's log income. It expresses the percentage by which a child's expected income rises for each one-percent increase in parental income, so a higher IGE means income advantages and disadvantages are more strongly transmitted across generations and society is less mobile. | The Gini coefficient is the most widely used single-number summary of inequality in a distribution such as income or wealth. Introduced by the Italian statistician Corrado Gini in 1912, it equals twice the area between the Lorenz curve and the line of perfect equality, ranging from 0 when everyone has the same amount to a maximum approaching 1 when one unit holds everything. |
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