The present study tests two predictions stemming from the hypothesis that a source of difficulty with rational numbers is interference from whole number magnitude knowledge. First, inhibitory control should be an independent predictor of fraction understanding, even after controlling for working memory. Second, if the source of interference is…

For many years, research has supported the value of using real-life experiences as teaching opportunities (Noobanjong & Louhapensang, 2017; Powell, 2015). This is just as true of teaching writing as of anything else. In fact, when learners use writing (such as journaling) to share their experiences, they benefit in several ways, including…

This article examines four preadolescent girls' physical lives over three years inside and outside of schools (fourth, fifth, and sixth grades). The girls participated in a school-based physical education intervention during the first two years that was designed to enhance their physical activity (PA) choices in both environments. At the…

This study examined associations among a concurrent set of social-emotional strengths and school membership across the United States (N = 1,009) and Chinese (N = 747) students aged 9 to 11 years old. Results identified significant positive relations of school membership with four social-emotional strengths (i.e., gratitude, optimism, zest, and…

We investigated the relationship of self-sexualization to self-objectification, weight concerns, self-efficacy, academic outcomes, and career aspirations among preadolescent girls. Participants were 89 six- to nine-year-old girls; parental reports were also obtained. Two thirds of girls showed signs of self-sexualization by choosing a sexualized…

The aim of this study was to assess whether and how a sustained instructional focus on argumentation might improve children's understanding and application of key epistemic criteria for scientific arguments. These criteria include the articulation of clear, coherent causal claims, and the explicit justification of such claims with appropriate…

Nationally, both science and agricultural education professional organizations have identified agriculture as a fundamental technology to be studied by students, with the goal of achieving an understanding of the agri-food system necessary for democratic participation. Benchmarks representing the content that K-12 children need to understand about…

The theory of evolution by natural selection has revolutionized the biological sciences yet remains confusing and controversial to the public at large. This study explored how a particular segment of the public--visitors to a natural history museum--reason about evolution in the context of an interactive cladogram, or evolutionary tree. The…

Although several studies have examined the prevalence of comorbid psychiatric disorders in children with autism spectrum disorders, there are no current longitudinal studies of such children regarding the impact of comorbidity. In this study, 44 of an original sample of 175 preschoolers were located after 5 1/2 years, at an average chronological…