RT Journal Article SR Electronic T1 The Impacts of Family Size on Investment in Child Quality JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 738 OP 754 DO 10.3368/jhr.XLI.4.738 VO XLI IS 4 A1 Cáceres-Delpiano, Julio YR 2006 UL http://jhr.uwpress.org/content/XLI/4/738.abstract AB Using multiple births as an exogenous shift in family size, I investigate the impact of the number of children on child investment and child well-being. Using data from the 1980 US Census Five-Percent Public Use Micro Sample, 2SLS results demonstrate that parents facing a change in family size reallocate resources in a way consistent with Becker’s Quantity & Quality model. A larger family generated by twins in a later birth reduces the likelihood that older children attend private school, reduces the mother’s labor force participation, and increases the likelihood that parents divorce. The impact of family size on a measure of child outcome, such as grade retention, is less clear. The results indicate that for both measures of child investment and child well-being, the 2SLS estimates are statistically distinguishable from OLS estimates, indicating an omitted variables bias in the single equation model.