Incorporating scientific uncertainty as part of science teaching means acknowledging that there may be incomplete or potentially limited scientific information when scientists draw conclusions. In the geosciences, scientists routinely make inferences about the Earth based on observations of the present, and test those observations against…

This study estimates the causal impact of 8th grade English learner (EL) reclassification on high school English language arts (ELA) standardized test scores, SAT (Scholastic Aptitude Test) reading, and on-track to graduate status. I apply a regression discontinuity design to rich administrative data from a large district in California. The…

Causal sequences can be segmented into cause and effect. However, some argue causal relations in discourse are by default in "effect-cause" order. Others claim "cause-effect" order is easier to process and the default way of expressing causality, due to iconicity. We conducted experiments testing participants' production…

In this article, I describe a program of research on the psychosocial benefits of racial/ethnic diversity in urban middle schools. It is hypothesized that greater diversity can benefit students' mental health, intergroup attitudes, and school adaptation via three mediating mechanisms: (a) the formation and maintenance of cross-ethnic friendships,…

The present article considers a fundamental question in evaluation research: "By how much do program effects vary across sites?" The article first presents a theoretical model of cross-site impact variation and a related estimation model with a random treatment coefficient and fixed site-specific intercepts. This approach eliminates…

This dissertation studies the effects of foreign presence on the performance of domestic institutions and economic agents. We identify three types of foreign presence: international students, inward foreign investment, and exporting activities. The first chapter investigates the impacts of international students on the graduation performance of…

Measures of school-level growth in student outcomes are common tools used to assess the impacts of schools. The vast majority of these measures are based on standardized tests, even though emerging evidence demonstrates the importance of social-emotional skills (SEL). This paper uses the first large-scale panel surveys of students on SEL to…

Young children tend to judge improbable events to be impossible, yet there is variability across age and across individuals. Our study examined parent-child conversations about impossible and improbable events and links between parents' explanations about those events and children's possibility judgments in a reasoning task. Regression analyses…

This self-study of pretend gunplay in my Transitional Kindergarten (TK) classroom was designed to guide me in not only improving my practice within the classroom, but also informing the development of sound classroom policies related to pretend gun-and-weapons play that balance children's developmental needs with my commitment to peace and…

The development of civically engaged citizens is vital for democratic societies. Although several studies have explored children and adolescents' conceptualizations of civic engagement, less is known about youths' understanding of the individual skills and attributes best suited for civic action. The current study utilized a Q-sort methodology to…

This article examines arts participation as a context for youth to develop purpose. Two analyses were conducted of interviews with arts-involved youth to explore the relationship between their arts participation and purpose, which was defined as an "intention to accomplish something that is both meaningful to the self and contributes to the…

Many educators view school climate and student achievement as separate considerations. For some, the idea of promoting a high quality climate can seem like a luxury in the face of the current high stakes assessment climate in which student achievement gains are the paramount consideration. However, the results of this study suggest that climate…

This study examined the relationship between school climate and student achievement ratings in urban school districts in five states (N = 230). Many educators view school climate and student achievement as separate considerations. However the results of this study suggest that climate and student achievement were highly related. In fact, the…

A fundamental issue for theories of human induction is to specify constraints on potential inferences. For inferences based on shared category membership, an analogy, and/or a relational schema, it appears that the basic goal of induction is to make accurate and goal-relevant inferences that are sensitive to uncertainty. People can use source…

Results from a qualitative study with parents about underage drinking are presented. Semistructured interviews (n = 44) were conducted with parents of teens to investigate whether and why parents permit underage drinking. Parents had three primary reasons for allowing underage drinking: deliberate, spontaneous, and harm reduction. Deliberate…