Abstract
This study expands existing scholarship on the relationship between parental educational similarity and infant health using rich administrative data from Chile covering births that occurred between 1990 and 2015. We test the relationship between parental educational similarity ( homogamy ) or dissimilarity ( heterogamy ) and two measures of infant health, namely low birth weight (LBW) and preterm birth (PB). We show that parental educational homogamy is associated with a reduced probability of low birth weight and preterm birth – particularly at the high end of the educational distribution – and the observed association is only partly driven by selection into homogamous couples, as demonstrated by complementary quasi-experimental analyses conducted on a subsample of matched step-siblings from same mothers but different fathers. We further show that couples where women outrank men in educational attainment ( hypogamy ) exhibit worse birth outcomes relative to their homogamous and hypergamous counterparts. Municipality-level analyses merging external information on female labor force participation (FLFP) prior to childbirth reveal that the association between hypogamy and children’s outcomes is increasingly negative as FLFP increases, highlighting a strong work-life balance tension for highly-educated women who are actively engaged in the labor force. Insights from this study contribute to a better understanding of the inequality debate surrounding the intergenerational transmission of advantage and disadvantage – a topical issue in a country that has recently joined the rank of the world’s wealthiest nations yet maintains extreme levels of socioeconomic inequality. • Chile has recently joined the rank of the world’s wealthiest nations, yet it maintains extreme levels of socio-economic inequality and worsening infant health overtime • We explore whether the educational composition of couples – and their changing nature over time – bears any relationship with infant health using rich birth records from Chile • We leverage quasi-experimental methods to assuage endogeneity concerns related to selection into specific couple types • We find that couples where men and women hold the same level of education exhibit better infant health than couples where men and women hold different levels of education • However, couples where women outrank men in educational attainment exhibit worse birth outcomes relative to their homogamous and hypergamous counterparts • The latter finding is exacerbated in contexts characterized by higher female labor force participation
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