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

The Variance of Population Characteristics in Stable Populations, with Applications to the Distribution of Income

Publication Abstract

Lam, David. 1984. "The Variance of Population Characteristics in Stable Populations, with Applications to the Distribution of Income." Population Studies, 38(1): 117-27.

Stable population theory has recently been used to analyse the effects of changes in fertility and mortality on economic variables such as income per head. In this paper more general results are derived to describe the effects of changing vital rates on the variance and higher moments of the distribution of some age-dependent variable. Simple analytical expressions are derived which decompose the effects of changes in age structure into the effects on inter-cohort and intra-cohort variance. The results are easily applied to standard measures of the distribution of income. By combining the analytical results with actual age profiles of income and income variance from the United States and Brazil it is observed that both the magnitude and direction of the effects of population growth on measured inequality are sensitive to the specific age profiles used. The most surprising result is that the Brazilian age profiles suggest that higher growth rates may actually reduce measured inequality, although the effect is relatively small.

Browse | Search : All Pubs | Next