Biology as Destiny: Short and Long-Run Determinants of Intergenerational Transmission of Birth Weight

Working Paper: NBER ID: w11567

Authors: Janet Currie; Enrico Moretti

Abstract: Little is known about the mechanisms underlying the transfer of economic status between generations. This paper addresses the question of whether inter-generational correlations in health contribute to the perpetuation of economic status. We examine inter-generational correlations in birth weight, a key indicator of the health of newborns that we link to future educational attainment and earnings using a unique data set based on California births from 1960s to the present. We use names and birth dates to link the records of mothers and children. We also identify mothers who are siblings. We show that there is a strong intergenerational correlation in the birth weight of mothers and children, but that a measure of household income at the time of the mother's birth is also predictive of low birth weight and that there is an interaction between maternal low birth weight and poverty in the production of low birth weight. Together these findings suggest that intergenerational correlations in health could play a role in the intergenerational transmission of income. Parent's income affects child health, and health at birth affects future income.

Keywords: intergenerational transmission; birth weight; socioeconomic status; health disparities

JEL Codes: I1


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Maternal low birth weight (J13)Child low birth weight (J13)
Child low birth weight (J13)Future economic status (P17)
Maternal low birth weight + Poverty (I32)Child low birth weight (J13)
Maternal low birth weight + Poverty (I32)Future economic status (P17)

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