Estimating treatment effects for subgroups defined by posttreatment behavior (i.e., estimating causal effects in a principal stratification framework) can be technically challenging and heavily reliant on strong assumptions. We investigate an alternative path: using bounds to identify ranges of possible effects that are consistent with the data.…

Background: Although nearly all states in the United States require school districts to adopt anti-bullying policies, little research examines the effect of these policies on student bullying and health. Using a statewide sample, we investigated associations between the quality of school district anti-bullying policies and student bullying…

Feasibly implemented Web-based smoking media literacy (SML) programs have been associated with improving SML skills among adolescents. However, prior evaluations have generally had weak experimental designs. We aimed to examine program efficacy using a more rigorous crossover design. Seventy-two ninth grade students completed a Web-based SML…

There are many promising psychological interventions on the horizon, but there is no clear methodology for preparing them to be scaled up. Drawing on design thinking, the present research formalizes a methodology for redesigning and tailoring initial interventions. We test the methodology using the case of fixed versus growth mindsets during the…

A common belief in United States culture is that "...sports can provide opportunities for personal growth and social development." (Ewing, 1997). Unfortunately, more recent research has suggested there is a growing trend to the contrary. As a result, those whose work it is to develop an athlete's morality should seek out strategies that…

Applied science, technology, engineering, and math (STEM) coursetaking is becoming more commonplace in traditional high school settings to help students reinforce their learning in academic STEM courses. Throughout U.S. educational history, vocational education has been a consistent focus for schools to keep students on the school-to-career…

Individuals with disabilities are underrepresented in science, technology, engineering, and math (STEM) fields. The purpose of this study was to experimentally evaluate the impact of a STEM mentor intervention and differences between students matched with mentors with or without disabilities on career planning outcomes. An independent groups ×…

The present study investigated the effectiveness of two short relevance interventions (writing a text or evaluating quotations about the utility of mathematics) using a sample of 1,916 students in 82 math classrooms in a cluster randomized controlled experiment. Short-term and sustained effects (6 weeks and 5 months after the intervention) of the…

As part of an outreach initiative by the Natural History Museum in Vienna, Austria, an interdisciplinary educational module was developed to teach students about sustainability through the lens of mineral resources used to produce mobile phones. The overall goal of the module is to provide teachers of different subjects with a multifaceted tool to…

The aim of this research realized at the general survey model is to evaluate "FATIH Project" in the frame of digital divide by determining the effects of the distributed tablets to the students being educated at K-12 schools on digital divide. Sample is taking from the 9th grade students in Sakarya city in the 2013-2014 academic session.…

There are few evaluations of peer-facilitated teenage dating violence prevention programs in the literature. To begin to address this gap, this project assessed the effectiveness of a school-based, peer-facilitated healthy relationships program among academically at-risk students. Two hundred and ninety-one ninth graders of mixed race and gender…

This paper reports a study comparing the effects of vocabulary instruction on recognition and recall through provision of either an L1 equivalent or an L2 (French) definition. Instruction was in the context of a focus-on-meaning listening activity. The study employed a quasi-experimental design, involving 262 Year 9 learners of French in seven…

Student academic achievement is of prime concern in the American education system because academic success (i.e. achievement) has been shown to be a predictor of success in later life and is crystallized in the United States Department of Education's mission statement "...to promote student achievement and preparation for global…

Background: Enhancing students' metacognitive abilities will help to facilitate their understanding of science concepts. Purpose: The study was designed to conduct and evaluate the effectiveness of a repertoire of interventions aimed at enhancing secondary school students' metacognitive capabilities and their achievements in science. Sample: A…

The main goal of environmental education is to improve environmental literacy, including not just more knowledge but also a better attitude toward the environment and a higher prevalence of pro-environmental behaviours. The Eco-School Program is considered the world largest environmental education program for schools, but it keeps growing without…