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Income distribution and economic development: Insights from machine learning
Author(s) -
Dutt Pushan,
Tsetlin Ilia
Publication year - 2021
Publication title -
economics and politics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 45
eISSN - 1468-0343
pISSN - 0954-1985
DOI - 10.1111/ecpo.12157
Subject(s) - gini coefficient , poverty , economics , econometrics , income distribution , per capita income , economic inequality , inequality , distribution (mathematics) , lasso (programming language) , instrumental variable , per capita , income inequality metrics , economic growth , mathematics , sociology , computer science , demography , mathematical analysis , population , world wide web
We draw upon recent advances that combine causal inferences with machine learning, to show that poverty is the key income distribution measure that matters for development outcomes. In a predictive framework, we first show that LASSO chooses only the headcount measure of poverty from 37 income distribution measures in predicting schooling, institutional quality, and per capita income. Next, causal inferences with post‐LASSO models indicate that poverty matters more strongly for development outcomes than does the Gini coefficient. Finally, instrumental variable estimates in conjunction with post‐LASSO models show that compared to Gini, poverty is more strongly causally associated with schooling and per capita income, but not institutional quality. Our results question the literature's overwhelming focus on the Gini coefficient. At the least, our results imply that the causal link from inequality (as measured by Gini) to development outcomes is tenuous.