The objective of the present study was to evaluate the extent to which students who took a computer adaptive test of reading comprehension accounting for testlet effects were administered fewer passages and had a more precise estimate of their reading comprehension ability compared to students in the control condition. A randomized controlled…

We present main effects of treatment and moderating effects of student background on science and engineering outcomes for grades 3-5 children participating in an engineering intervention. Data is from a large-scale randomized-controlled trial of two matched pairs (intervention and comparison) of engineering units. The intervention curriculum…

The purpose of this study was to evaluate whether the Targeted Reading Intervention (TRI), a professional development and early reading intervention program delivered via webcam technology, could support the early reading progress of English learners (ELs). Participants for the current study were drawn from a larger three-year randomized…

The study purpose was to examine the impact of the Harvest of the Month (HOTM) program on fruit and vegetable (FV) consumption, FV preferences, other eating behaviors, physical activity and other variables related to healthy eating. A clustered randomized controlled trial was employed in 28 elementary schools. After parental consent was obtained,…

This study examined the effects of a newly developed on-site consultancy programme to improve global quality of the child care environment in non-parental child care centres for 0- to 4-year-old children as measured with the ITERS-R/ECERS-R. Using a randomised controlled trial with a pretest, posttest, and follow-up test, we compared 35…

Multisite trials, in which individuals are randomly assigned to alternative treatment arms within sites, offer an excellent opportunity to estimate the cross-site average effect of treatment assignment (intent to treat or ITT) "and" the amount by which this impact varies across sites. Although both of these statistics are substantively…

Individuals in marriages and long term committed relationships often turn to friends and family members for support and input about relationship problems. Given their lower use of mental health services, these confiding relationships may be particularly important to African Americans. The goal of this study was to evaluate an educational…

The purpose of this replication study was to examine the impact of the Teacher Study Group (TSG) professional development in vocabulary on first-grade teachers' knowledge of vocabulary instruction and observed teaching practice, and on students' vocabulary knowledge. Sixty-two schools from 16 districts in four states were randomly assigned to…

This study examines the effect of mobile learning applications on undergraduate students' academic achievement, attitudes toward mobile learning and animation development levels. Quasi-experimental design was used in the study. Participants of the study were students of the Buca Faculty of Education at Dokuz Eylul University in Turkey. The…

This study investigated the psychosocial adjustment and anxiety of adolescents during a 7-month exercise intervention programme. In addition, extensive research on the psychosocial adjustment of adolescents during intense physical activity was performed. The experimental group included adolescent girls (n = 110) and boys (n = 107) aged between 14…

The purpose of this study was to investigate the effect of Process Oriented Guided Inquiry Learning (POGIL) method compared to traditional teaching method on 11th grade students' conceptual understanding of electrochemistry concepts. Participants were 115 students from a public school in Turkey. Nonequivalent control group design was used. Two…

Muralidharan and Sundararaman report a randomised controlled trial of a school voucher experiment in Andhra Pradesh, India. The headline findings are that there are no significant academic differences between voucher winners and losers in Telugu, mathematics, English, and science/social studies, although because the private schools appear to use…

The present study examined the effectiveness of the oral history approach with respect to students' historical competence. A total of 35 ninth-grade classes (N = 900) in Germany were randomly assigned to one of four conditions--live, video, text, or a (nontreated) control group--in a pretest, posttest, and follow-up design. Comparing the three…

Individuals with disabilities comprise the largest minority group in the world, yet they are the most underrepresented minority group in higher education, the job market and entertainment media such as literature. This population is often underrepresented because of the overlapping physical, attitudinal and policy barriers that prevent them from…

Few research studies have examined postintervention data from professional development interventions on science teaching and learning. Given the limited research, it is recommended that more studies examine the lasting effects of science professional development on teachers and students. The purpose of this current study was to examine the…