We examined the age of onset, over-time dynamics, and mechanisms underlying science achievement gaps in U.S. elementary and middle schools. To do so, we estimated multilevel growth models that included as predictors children's own general knowledge, reading and mathematics achievement, behavioral self-regulation, sociodemographics, other child-…

This research empirically evaluates data sets from the National Center for Education Statistics (NCES) for design effects of ignoring the sampling design in weighted two-level analyses. Currently, researchers may ignore the sampling design beyond the levels that they model which might result in incorrect inferences regarding hypotheses due to…

Reading development in students who are second language learners (SLLs) has been a concern of many educators. It is important to understand reading development in students who are SLLs to effectively support their reading development. The dissertation consists of two studies, presented in two stand-alone manuscripts, that aimed to deepen our…

First-time kindergartners who demonstrated positive approaches to learning behaviors more frequently in the fall of kindergarten tended to make greater gains in reading, mathematics, and science between kindergarten and second grade. For each additional point in students' fall kindergarten approaches to learning score, average gains from…

Improving the reading ability of young students could hardly be a more urgent priority for our elementary schools. Two thirds of American fourth and eighth graders are not able to read proficiently--and the outcomes are far worse for students from disadvantaged backgrounds. The National Assessment of Educational Progress in 2019 showed that only…

As the United States experiences greater income inequality, more and more students experience an early science achievement gap. This study tested several competing theoretical models of early science achievement with a longitudinal sample of 14,624 children who were followed from kindergarten entry to the end of 1st grade. To understand why and…

Recent research has indicated that science-based achievement gaps open early in children's educational careers and are explained largely by malleable factors. Two potentially important variables to consider include children's executive function (EF) and learning-related behaviors exhibited in the classroom. These variables have been identified as…

The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011) is the third in a series of longitudinal studies of young children conducted by the National Center for Education Statistics (NCES), within the U.S. Department of Education's Institute of Education Sciences. The ECLS-K:2011 collected information about the early…

Significant racial and ethnic achievement gaps exist between students in the U.S. by elementary school, although the underlying causes for these achievement gaps differ. One factor for racial/ethnic achievement gaps is between-group differences in socioeconomic status (SES), particularly exposure to poverty. Moreover, other factors contributing to…

In the face of rising economic and social inequality, American parents increasingly seek to promote their children's academic achievement through provision of enriching learning opportunities. In this study, we hypothesized that parental investments in both home and out-of-home learning resources may partially explain socioeconomic disparities in…

This study documents gaps in kindergarten and first-grade science achievement by family income and explores the degree to which such gaps can be accounted for by student race/ethnicity, out-of-school activities, parental education, and school fixed effects. In doing so, it expands on prior research that documents disparate rates of science…

Transitioning from elementary school to middle school can be a difficult time for many adolescents. It is a period often correlated with a decline in students' academic achievement, perceptions of performance, potential, and value in schooling. Research has shown evidence that parents' involvement in their children's education significantly…

The United States faces high demand for science, technology, engineering, or mathematics (STEM) professionals and a scarce supply of individuals who pursue STEM careers, especially minority populations in the U.S with proficiency in a language other than English. The primary goal of this research was to determine the impact of use of Spanish in…

Whether and to what extent kindergarten children's executive functions (EF) constitute promising targets of early intervention is currently unclear. This study examined whether kindergarten children's EF predicted their second-grade academic achievement and behavior. This was done using (a) a longitudinal and nationally representative sample (N =…

Theory and limited research indicate that race and socioeconomic status (SES) interact dynamically to shape children's developmental contexts and academic achievement, but little scholarship examines how race and SES intersect to shape Black-White achievement gaps across development. We used data from the Early Childhood Longitudinal Study,…