Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Detroit Mayor challenges U-M to analyze root causes, patterns of murders in city

Lam on what helps and hurts in world-wide youth unemployment

Buchmueller says must-access program curbs doctor-shopping for opioids

More News

Highlights

Bailey, Eisenberg , and Fomby promoted at PSC

Former PSC trainee Eric Chyn wins PAA's Dorothy S. Thomas Award for best paper

Celebrating departing PSC trainees

Bloome finds children raised outside stable 2-parent families more likely to become low-income adults, regardless of parents' income

More Highlights

David Lam photo

Lorenz Curves, Inequality, and Social Welfare under Changing Population Composition

Publication Abstract

Lam, David. 1988. "Lorenz Curves, Inequality, and Social Welfare under Changing Population Composition." Journal of Policy Modeling, 10(1): 141-62.

This paper analyzes the effects of population growth and other demographic changes on the distribution of income by examining Lorenz curves and generalized Lorenz curves produced from combinations of income distributions. The paper shows that when subpopulations have equal means, a number of simple conditions govern the position of the Lorenz curve for the combined population relative to the Lorenz curves for the subpopulations. These conditions become less regular when the subpopulations have different means, and suggest that a combined distribution will almost never Lorenz-dominate an original distribution. Implications of the results for intertemporal comparisons of social welfare and inequality are discussed. The results are illustrated by comparing income distributions across generations in Brazil.

Browse | Search : All Pubs | Next