Jayachandran and Kuziemko (Why do mothers breastfeed girls less than boys? Evidence and implications for child health in India. Quarterly Journal of Economics 2011; 126(3): 1485-1538) develop and empirically validate a theory showing son preference in India generates passive parental bias against girls in breastfeeding due to gender-differentiated birth spacing and fertility stopping. I scientifically replicate their empirical exercises to test the validity of the theory in Egypt, where there is also high prevailing son preference, but little research on its implications for child health investments. I additionally examine whether using the exclusive breastfeeding rate as an alternative outcome yields supportive evidence for the theory. I find the theory is strongly supported by empirical results from Egyptian data, bolstering its policy relevance for developing countries besides India.
