This dissertation addresses three separate questions in human capital and development economics. In the first chapter, I study how college admission concerns drive students' field choices in a field-specific college admission system. To study this question, I leverage a college admission policy reform in Ethiopia that sharply increased the proportion of college seats in public universities allocated to college STEM fields. The reform significantly decreased the admission selectivity of STEM fields in the short run. Using cohort analysis and a regression discontinuity design, I show that students are significantly more likely to choose the STEM fields after the reform. More importantly, I find significant heterogeneity in the field choice response, with the marginal students responding more strongly compared to the infra-marginal students. In addition, using a complier characteristics analysis, I show that the reform led to a significant sorting on field-specific skills. In particular, those induced to choose the STEM fields have a comparative advantage in skills valued more in the STEM fields. These overall and field-specific sorting significantly changed the peer quality in STEM and non-STEM fields. These findings imply that admission concerns play a significant role in students' field choices. However, students do not naively sort into less selective college fields. Instead, their choices are consistent with their relative position in the distribution of multi-dimensional skills. The latter suggests that students make more informed and rational choices than the existing literature suggests. In the second chapter, I investigate the effect of the fast expansion of the Second Generation (2G) and Third Generation (3G) mobile technologies in Sub-Saharan Africa (SSA) on health literacy in the region. Using Demographic and Health Surveys data from 25 countries in SSA and a historical mobile network coverage map, I estimate an Instrumental Variable (IV) specification. I show that the widespread use of these technologies has significantly improved health literacy in the region. Specifically, access to either technology significantly decreases misconceptions and wrong beliefs about diseases and health. The benefits are substantial in regions where the technologies have been available longer. Consistent with the range of services it provides, 3G technology results in a larger gain in health literacy. These findings imply that mobile technologies have considerable potential to improve health and quality of life in many developing countries. In the final chapter, I study the relationship between birth spacing and children's outcomes, focusing on the mechanisms that underlie the relationship. Using linked mother-child data from the National Longitudinal Survey of Youth (NLSY), I explore two mechanisms: the maternal health and physiology channel and the material and parental time input channel. The result shows that a short pre-birth inter-pregnancy interval negatively affects the birth endowments of children, highlighting the importance of the birth spacing effect that works through the maternal health and physiology channel. The study also provides evidence in support of the material and parental time input channel. In particular, I show that closely spaced siblings score significantly lower on the standardized Peabody International Achievement Test (PIAT), a wide-range measure of academic achievement for children aged five and above. On the other hand, I find limited evidence of the birth spacing effect on long-term outcomes such as schooling and labor market outcomes. These findings have implications for parental leave and other labor market policies affecting the birth spacing choices of parents.

In this dissertation I analyze patterns of maternal-infant health in developing contexts. My first chapter uses child hemoglobin as a bio-marker for maternal malnutrition in Senegal during the 2008 food price crisis. In early 2008, world rice prices skyrocketed, causing people around the world to plunge into poverty. Senegal, in particular, depends heavily on imported foodstuffs. I find that the crisis had a large, negative impact on child anemia in urban Senegal, most likely reflecting a deterioration of maternal nutrition caused by rising food prices. In the second and third chapters, we introduce a novel indicator of maternal-infant health: childhood sex ratios. Because infant females have lower rates of mortality than infant males, the sex ratio of the surviving population reflects the level of infant mortality. Childhood sex ratios are widely available from census data, meaning we can use them to shed new light on historical populations who lack traditional sources of data on infant mortality, like birth and death records. We apply this new method to the 19th-century US, where the lack of vital statistics has left uncertainty over even approximate levels of infant mortality. We find that the level of infant mortality in the pre-industrial US was much lower than previously thought, but that racial health disparities were much greater.

This dissertation consists of three empirical essays investigating different aspects of health care for children and families. The first essay examines the effectiveness of adherence to American Academy of Pediatrics guidelines for preventive pediatric health care. Using a national longitudinal sample of children age two years and younger, we investigate whether compliance with prescribed periodic well-child care visits has beneficial effects on child health. We find that increased compliance improves child health. In particular, higher compliance lowers future risks of fair or poor health, of some history of a serious illness and of having a health limitation. The second essay examines child health care utilization in relation to maternal labor supply. We test the hypothesis that working-mothers trade off the advantages of greater income against the disadvantages of less time for other valuable tasks, such as seeking health care for their children. This tradeoff may result in positive, negative, or no net impacts on child health investment. We estimate health care demand regressions that include separate variables for mother’s labor supply and her labor income. Our results indicate that higher maternal work hours reduce child health care visits; higher maternal earnings increase them. In addition, wage-employment, as opposed to self-employment, is detrimental to child health investment. A further finding is that preventive care demand for younger children is less sensitive to maternal time and income changes. We also find that detrimental time effects dominate beneficial income effects. The third essay studies intra-household resource allocation as it pertains to its demand for preventive medical care. We test the income-pooling hypothesis of the common preference model by using individual specific medical care consumption data and present evidence on the allocation of household resources to the medical needs of the child, husband and wife. Our results are in line with the findings of previous studies that emphasize the ongoing importance of the traditional gender role of woman as the primary caregiver. We find that the resources of the wife have a greater positive impact on child’s and her own preventive care demand than does the resources of the husband. In contrast to most studies from developing countries, we find that US families do not exhibit differential health care demand based on child gender. It is also noteworthy that the wife’s education level has a greater positive impact than that of her husband does on both the husband’s and her own preventive care utilization. / text

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