We studied the effect of the number and characteristics of siblings (sex, age) on school achievement in several grades (kindergarten, first grade, and fifth grade), in two large French cohorts, with more than 16,000 children. Running linear mixed-effects models, we find that, independently of socioeconomic status, having more siblings is…

This article proposes a latent variable regression four-level hierarchical model (LVR-HM4) that uses a fully Bayesian approach. Using multisite multiple-cohort longitudinal data, for example, annual assessment scores over grades for students who are nested within cohorts within schools, the LVR-HM4 attempts to simultaneously model two types of…

The purpose of this study was to target students who show aggressive and bullying behavior due to a lack of anger management and self-control skills. Two groups of boys in grades 2-4 participated in anger managements groups that either followed an anger management curriculum or followed the anger management curriculum plus breathing techniques.…

"Retraction Notice--Joseph Hilgard, postdoctoral fellow at the Annenberg Public Policy Center at the University of Pennsylvania, contacted the journal with questions regarding the pattern of results and conducted reanalyses of the data that called into question the credibility of the data. Unfortunately, the data collection procedures could…

Background: In line with the reflected self-appraisal hypothesis, previous research finds associations between weight and maladjustment are strongest when there is a mismatch between individuals' weight and the weight norm of their social contexts. However, research has not considered associations in more proximal social contexts. We examined…

In this study, 676 middle school students in grades 6, 7 and 8 were asked to complete a survey online, during class time, which asked them their opinions on using iPads in school. Responses to the survey questions were generally positive however comments written at the end were very critical of the initiative. Significant differences were found…

Federal regulations indicate that the achievement gap must be closed between subgroups, including the gap between special education and non-special education students. We explored the ways in which achievement trends are influenced by three methods of reporting (cross-sectional, cohort-static, and cohort-dynamic). We also investigated (a) the ways…

Using data from seven cohorts of language immersion lottery applicants in a large, urban school district, we estimate the causal effects of immersion programs on students' test scores in reading, mathematics, and science and on English learners' (EL) reclassification. We estimate positive intent-to-treat (ITT) effects on reading performance in…

This study investigated to what extent primary school teachers' perceptions of their students' ability and effort predict developmental changes in children's self-concepts of ability in math and reading after controlling for students' academic performance and general intelligence. Three cohorts (N?=?849) of elementary school children and their…

Motivational constructs and students' engagements have great impacts on students' mathematics achievements, yet they have not been theoretically investigated using international large-scale assessment data. This study utilized the mathematics data of the Trends in International Mathematics and Science Study 2011 to conduct a comparative and…

This study examined the science self-efficacy beliefs of students at the transition from elementary school (Grade 6) to middle school (Grade 7) and the transition from middle school (Grade 8) to high school (Grade 9). The purpose was to determine whether students' perceived competence is impacted at these important school transitions and if the…

The current study further establishes the reliability and validity of the Bullying Participant Behaviors Questionnaire (BPBQ), a self-report survey that allows for an examination of participation in various bullying participant role behaviors including bully, assistant to the bully, victim, defender of the victim, and outsider. The study included…

Having an efficient and satisfactory economy education may enable an individual to actively participate in decision making process about economy-related issues. This is very important for democratic societies. This research aims to search methods and levels of teaching "economy" concepts prepared for Turkey 2005 Social Studies Program in…

The present study investigated language skills and reading comprehension with English monolingual and Spanish-English bilingual children in grades 2-5. Of the 377 children in the sample, 207 were English monolingual and 170 were Spanish-English bilingual. Data were collected within a cohort-sequential design for two academic years in the fall and…

Students with significant cognitive disabilities are eligible to participate in two statewide testing options for accountability: alternate assessments or general assessments with appropriate accommodations. Participation guidelines are generally quite vague, leading to students "switching" test participation between years. In this…