Background: We sought to determine if perceived barriers, benefits, and modifiable behaviors support or interfere with breakfast consumption in a racially and economically diverse rural high school population. Methods: The participants were 832 Minnesota adolescents from 16 rural high schools. We used baseline data from a group randomized trial…

Purpose: We examined the effects of a text-processing reading comprehension intervention emphasizing listening comprehension and expressive language practices with middle school students with reading difficulties. Method: A total of 134 struggling readers in grades 6-8 were randomly assigned to treatment (n = 83) and control conditions (n = 51)…

Purpose: We examined the effects of a text-processing reading comprehension intervention emphasizing listening comprehension and expressive language practices with middle school students with reading difficulties. Method: A total of 134 struggling readers in grades 6-8 were randomly assigned to treatment (n = 83) and control conditions (n = 51)…

Background: We assessed the effectiveness of a simple intervention for increasing children's physical activity, play, perceived competence/social acceptance, and social skills. Methods: A cluster-randomized controlled trial was conducted, in which schools were the clusters. Twelve Sydney (Australia) primary schools were randomly allocated to…

This article presents the results of a randomized clinical trial evaluating the eight-session "Family Eats" web-based intervention promoting healthy home food environments for African American families. African American families (n = 126) with 8- to 12-year-old children completed online baseline questionnaires and were randomized into…

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…

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…

Comparing deaf and hard of hearing (DHH) children with their hearing peers in learning Chinese, the study tested the lexical quality hypothesis (Perfetti, 1992, 2007), which asserts the importance of building orthographic, phonological, and semantic connections in high-quality lexical representations. DHH children and hearing peers matched on…

Objective: To evaluate an intervention aimed at increasing human papillomavirus (HPV) vaccine completion of the 3-dose series and knowledge. Participants: Two hundred sixty-four male and female US college students 18-26 years old who were receiving HPV vaccine dose 1. Methods: Students were randomly assigned to the intervention or control group.…

Most of the individual difference variance in the population is found "within" families, yet studying the processes causing this variation is difficult due to confounds between genetic and nongenetic influences. Quasi-experiments can be used to test hypotheses regarding environment exposure (e.g., timing, duration) while controlling for…

Two randomised control experiments examined spelling outcomes in a repeated measures design (pre-test, post-tests; 1-day, 1-month follow-up, 5-month follow-up), where students learned Spanish irregular words through (1) immediate feedback using self-correction, (2) visual imagery where children imagine and represent words using movement, and (3)…

This study analyzes the effectiveness of Bibliodidactics--a teaching method for reading incorporating narrative therapy, subtext, storytelling, and bibliotherapy through cognitive processing of emotions--on reading levels of nonnative illiterate or poor-reading prisoners.

Instructional design principles for visuals in student materials have been developed through findings based on student-level measures. However, teacher viewpoints may be a rich source of information to better understand how visuals can be optimized for student learning. This study's purpose is to examine teacher viewpoints on visuals. In a…

We assessed the effectiveness of a culturally grounded, multimedia, sexual risk reduction intervention called Circle of Life (mCOL), designed to increase knowledge and self-efficacy among preteen American Indians and Alaska Natives. Partnering with Native Boys and Girls Clubs in 15 communities across six Northern Plains reservations, we conducted…

Mothers have an important role to play in teaching their children about sexual issues and shaping children's sexual knowledge, attitudes and behaviours. In many cases, however, mothers themselves need help and support. This study was conducted to examine the effects of a sex education programme on the knowledge and attitudes of the mothers of…