The Effect of Family Size on Education: New Evidence from China's One Child Policy

Social scientists theorize that the inverse relationship between socio-economic status and family size represents a trade-off between the quality and quantity of children. Evaluating this hypothesis empirically requires addressing the simultaneity of the quality and quantity decisions. Researchers have used the unanticipated birth of twins as exogenous variation in family size or the sex composition of the first two children as an instrument for family size with mixed results. We exploit a different source of exogenous variation in family size. The One Child Policy (OCP) in China dramatically reduced Chinese fertility and we examine how the OCP has affected the educational attainment of Chinese migrants to the U.S. Using data from the American Community Survey (2009-2012) and a difference-in-differences strategy our results support the quality-quantity tradeoff theory. We find that education increased more for Chinese migrants born after the OCP than their counterparts from other East Asian countries

Immigration, obesity and labor market outcomes in the UK

We estimate the dual effects of immigration and obesity on labor market outcomes in the UK. There is only one other paper that has estimated these dual effects on a sample of immigrants to the US. We use the British Household Panel Survey, which contains information on height and weight for 2004 and 2006, along with immigration status and labor market outcomes. This was a period of increased immigration to the UK resulting in large part from the accession of new EU member states, though our sample includes both recent arrivals and those who have been in the UK for decades. We first analyze an immigrant-only sample and then expand the sample to compare the experience of these immigrants to natives with similar weight and other observable characteristics. We find support for the healthy immigrant hypothesis that suggests that immigrants are less likely to be obese than natives, and also evidence of an assimilation effect in which immigrants' weight increases with their time in the UK. The results indicate a wage premium and higher proportions of white collar work for immigrant men, but a wage penalty and lower proportions of white collar work for overweight and obese immigrant men. We find weaker but still negative associations between weight and labor market outcomes for immigrant women. Data limitations preclude efforts to address endogeneity, so these findings should be viewed as associations that support the need for better data for additional analysis of the dual effects of immigration and obesity on labor market outcomes

LEGISLATING LOVE: The Effect of Child Support and Welfare Policies on Father–child Contact

Reducing non-marital childbearing and making nonresidential fathers take greater responsibility for their children were identified as goals of numerous policy changes since the 1980s. Child-support award rates for children born to unmarried parents have been quite low historically, leading lawmakers to focus on increasing both award and payment rates for this group. Nonmarital fathers are also much less likely to have contact with their children. Although evidence suggests that policy efforts increase child support awards and receipt, the link between child support policies, child support outcomes, and father-child contact has received less attention. This paper uses data from the Survey of Income and Program Participation on children born between 1985–1997 to investigate the relationship between child-support award and receipt and the amount of contact that fathers have with their non-residential children. Since it is likely that both of these behaviors are, in part, determined by unobservable characteristics of the father, we estimate an instrumental variables Tobit model. The model is identified by our assumption that child support policy variables can impact child support awards and payments, but father-child contact cannot be directly legislated. Our results suggest that there are unintended, but desirable effects of child support establishment and collection. Policies to collect child support not only increase financial resources to families, but through their impact on payments increase visitation and contact between these children and their fathers. The estimated impact of receiving child support on contact is more than 27 days per year. Copyright Kluwer Academic Publishers 2004child support, father-child contact, nonmarital fathers, IV Tobit,

Light Pollution, Sleep Deprivation, and Infant Health at Birth

This is the first study that uses a direct measure of skyglow, an important aspect of light pollution, to examine its impact on infant health at birth. We find evidence of reduced birth weight, shortened gestational length and even preterm births. Specifically, increased nighttime brightness, characterized by being able to see only one-third to one-fourth of the stars that are visible in the absence of artificial light, is associated with an increase in the likelihood of a preterm birth by as much as 12.8 percent, or an increase of approximately 45,000 preterm births nationwide annually. Our findings add to the literature on the impact of in utero and early-life exposure to pollution, which thus far has focused primarily on air pollution. The unique feature of our identification strategy to determine a causal effect is the application of Walker's Law in physics, which provides a scientific basis to estimate skyglow. We use estimated skyglow as an instrumental variable to address the endogeneity problem associated with the skyglow variable. In addition, our study shows that increased skyglow is associated with less sleep, indicating a likely biological mechanism that links sleep deprivation to light-pollution induced circadian disruption. This result, combined with the literature on the adverse effects of sleep disorders, completes the causal chain underlying our finding on the adverse health impact of skyglow. Our study has important policy implications for current installation of LED streetlights in many U.S. municipalities, highlighting the necessity of minimizing skyglow contributed by streetlights

Killer debt: The impact of debt on mortality

This study analyzes the effect of individual finances (specifically creditworthiness and severely delinquent debt) on mortality risk. A large (approximately 170,000 individuals) subsample of a quarterly panel data set of individual credit reports is utilized in an instrumental variables design. The possibility of the reverse causality of bad health causing debt and death is removed by instrumenting for individual finances post 2011 using the exposure to the housing crisis based on their 2005 residence. Worsening creditworthiness and increases in severely delinquent debt are found to lead to increases in individual mortality risk. This result has implications for the benefit of policies such as the social safety net, which aims to protect individual finances, by adding reduced mortality to the benefit of any intervention

Is Good Health Contagious? The Impact of BMI Environment on Individual BMI

Increasing trends in obesity have driven policymakers around the US to examine factors associated with lower Body Mass Index (BMI) and improved health. Our research examines the relationship between an individual's health and their environment. Specifically, we examine whether moving to a state with a different statewide average BMI than the state of origin leads to changes in individual BMI. Combining individual data from the 1997 cohort of the National Longitudinal Survey of Youth with state-level data on average BMI from the Centers for Disease Control, we find that individuals experience changes in BMI that move their individual BMI based on the BMI of their destination state relative to their state of origin. The effect is largely due to female moving to states with much higher BMI than their state of origin. These individuals see an increase in their average BMI of approximately 2.5 percent and an increase in the likelihood of being overweight of approximately 9.8 percentage points