Bullying bystanders' reactions are important for either stopping or perpetuating bullying behaviors. Given school-based bullying programs' focus on bystanders, understanding the associations between school-level factors and individual bystander responses can improve intervention efficacy. Data from 64,670 adolescents were used to examine bullying…

Objectives: The importance of breastfeeding exposure and children's development of self-regulation, independently, are well established. Each of these domains also has been linked to better cognitive development and academic achievement in children. However, little is known about how breastfeeding affects development of early self-regulation…

Children with complex communication needs (CCN) who use augmentative and alternative communication (AAC) often need more time to process and respond when communicating with others. This study employed a survival analysis approach exploring child response-time patterns following different communication opportunities for young children with CCN who…

We ask whether patterns of racial/ethnic and socioeconomic stratification in educational attainment are amplified or attenuated when we take a longer view of educational careers. We propose a model of "staged advantage" to understand how educational inequalities evolve over the life course. Distinct from cumulative advantage, staged…

Analyzing constructed responses, such as think-alouds or self-explanations, can reveal valuable information about readers' comprehension strategies. The current study expands on the extant work by (1) investigating combinations and patterns of comprehension strategies that readers use and (2) examining the extent to which these patterns relate to…

Why do people shift their strategies for solving problems? Past work has focused on the roles of contextual and individual factors in explaining whether people adopt new strategies when they are exposed to them. In this study, we examined a factor not considered in prior work: people's evaluations of the strategies themselves. We presented…

In this study, we identified the specific discipline decision situations (i.e., vulnerable decision points [VDPs]) that contribute most to racial discipline disparities from a sample of 2020 schools across the United States. We also examined how much VDPs contributed to overall discipline disparities and the extent which there was similarity among…

Without a better understanding of what contributes to racial/ethnic and gender underrepresentation in science, technology, engineering, and mathematics (STEM) fields, many U.S. citizens likely will not be able to take full advantage of the socioeconomic affordances of STEM occupations. Additionally, the increasingly diverse nation will have a STEM…

There is growing evidence that school starting age impacts children's likelihood of receiving special education services, but less is known about variations in this effect. Using a regression discontinuity design, I found that the youngest students in a kindergarten cohort are 40% more likely (p < 0.001) to be placed in special education than…

We develop a conceptual framework for understanding and predicting teacher shortages at the state, region, district, and school levels. We then empirically examine how teacher shortages vary geographically and by subject using data on unfilled teaching positions in Tennessee traditional public schools during Fall 2019. We find that teacher…

This study investigates how adolescents' daily prosocial behaviors to friends are related to diurnal cortisol using between- and within- subject analyses. Further, we examine whether role fulfillment (i.e., feeling like a good friend) moderates links between prosocial behaviors and cortisol. Ethnically diverse adolescents (N = 370; ages 11-18)…

Additional to the lack of gender and ethnic diversity, the attrition rate among Physics and Engineering undergraduates is as high as 40%. Considering the impact of STEM gateway course on students' choice of major, we investigated the association between students' Expectancy-Value beliefs at the beginning of the class with their intent to persist…

The transition to formal schooling is a large contextual change, which for many children in U.S. begins with the year of kindergarten. To better understand the challenges of this transition, the present study examines the extent to which children experience transition difficulties in five salient areas: making friends, following schedules, meeting…

Excessive use of exclusionary school discipline with Black students is a persistent, systemic problem in U.S. schools with potential to affect students' perceptions of their school. For example, students may notice racial differences in out-of-school suspensions, which may relate to how academically engaged they feel and the extent to which they…

Prior research has found gender differences in spatial tasks in which men perform better, and are more confident, than women. Do gender differences also occur in people's confidence as they perform number-line estimation, a common spatial-numeric task predictive of math achievement? To investigate this question, we analyzed outcomes from six…