3,637 research outputs found

    The Effect of Adolescent Health on Educational Outcomes: Causal Evidence using ‘Genetic Lotteries’ between Siblings

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    There has been growing interest in using specific genetic markers as instrumental variables in attempts to assess causal relationships between health status and socioeconomic outcomes, including human capital accumulation. In this paper we use a combination of family fixed effects and genetic marker instruments to show strong evidence that inattentive symptoms of ADHD in childhood and depressive symptoms as an adolescent are linked with years of completed schooling. Our estimates suggest that controlling for family fixed effects is important but these strategies cannot fully account for the endogeneity of poor mental heath. Finally, our results demonstrate that the presence of comorbid conditions present immense challenges for empirical studies that aim to estimate the impact of specific health conditions.Education Outcomes, Depression, Genetic Markers, ADHD, Obesity, Family Fixed Effects, and Instrumental Variables

    The generic character table of a Sylow pp-subgroup of a finite Chevalley group of type D4D_4

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    Let UU be a Sylow pp-subgroup of the finite Chevalley group of type D4D_4 over the field of qq elements, where qq is a power of a prime pp. We describe a construction of the generic character table of UU

    Orientational order on curved surfaces - the high temperature region

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    We study orientational order, subject to thermal fluctuations, on a fixed curved surface. We derive, in particular, the average density of zeros of Gaussian distributed vector fields on a closed Riemannian manifold. Results are compared with the density of disclination charges obtained from a Coulomb gas model. Our model describes the disordered state of two dimensional objects with orientational degrees of freedom, such as vector ordering in Langmuir monolayers and lipid bilayers above the hexatic to fluid transition.Comment: final version, 13 Pages, 2 figures, uses iopart.cl

    Using Genetic Lotteries within Families to Examine the Causal Impact of Poor Health on Academic Achievement

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    While there is a well-established, large positive correlation between mental and physical health and education outcomes, establishing a causal link remains a substantial challenge. Building on findings from the biomedical literature, we exploit specific differences in the genetic code between siblings within the same family to estimate the causal impact of several poor health conditions on academic outcomes. We present evidence of large impacts of poor mental health on academic achievement. Further, our estimates suggest that family fixed effects estimators by themselves cannot fully account for the endogeneity of poor health. Finally, our sensitivity analysis suggests that these differences in specific portions of the genetic code have good statistical properties and that our results are robust to reasonable violations of the exclusion restriction assumption.

    Addressing NASA\u27s Workforce Development Initiative - Slides

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    Addressing NASA\u27s Workforce Development Initiative: Intensifying Outreach and Collaborations in Nebraska\u27s Native Community - 9/24/2004 Brent D. Bowen & Mary M. Fink (University of Nebraska at Omaha); Henry R. Lehrer, Little Priest Tribal Colleg
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