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…

Purpose: This paper aimed to examine moderate-to-vigorous physical activity (MVPA) levels in physical education. Method: A review of reviews was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The screening process, data extraction, assessment of the risk of bias, and analysis of the…

Background: In France, 3.2 million middle-school students have serious/persistent school difficulties and are re-engaged in adapted-general/vocational-education class (AGVEC), created to early re-engage them in school/professional projects. We assessed the AGVEC's benefits for school-behavior-health-related difficulties (SBHDs). Methods: This…

In most Western countries, girls outperform boys in academic engagement, scholastic achievement, and school completion. In the current study, researchers assessed the developmental trajectories of European French and North African French boys' (N = 549; M[subscript age] = 11.9 years) perceptions of girls' and boys' ability to succeed in school.…

The cognate advantage in bilingual children varies in strength across groups and individuals, in particular on receptive measures (e.g. picture-identification). This variation may be due to children's developing ability to benefit from cognates in such tasks, yet longitudinal studies of this phenomenon, especially with older children, are rare.…

Philosophy for Children (P4C) is a collective (teaching) practice which has been shown to foster language abilities, logic and creativity in children. While these benefits obtained with the P4C "oral" practice have been well documented, philosophical writing received little attention. The aim of this paper is to examine which conditions…

Principals (policy makers) have debated the progress in U.S. student performance for a half century or more. Informing these conversations, survey agents have administered seven million psychometrically linked tests in math and reading in 160 waves to national probability samples of selected cohorts born between 1954 and 2007. This study is the…

We report two experiments that investigated whether phonological and/or orthographic shifts in a base word interfere with morphological processing by French 3rd, 4th, and 5th graders and adults (as a control group) along the time course of visual word recognition. In both experiments, prime-target pairs shared four possible relationships:…

The present study used a variant of masked priming to track the development of 2 marker effects of orthographic and phonological processing from Grade 1 through Grade 5 in a cross-sectional study. Pseudohomophone (PsH) priming served as a marker for phonological processing, whereas transposed-letter (TL) priming was a marker for coarse-grained…

Solving simple arithmetic word problems is a major ability that children must acquire throughout the primary-grade mathematics curriculum. However, this skill is often challenging for them. For instance, "unknown referent problems" are more difficult to solve than "unknown compare problems." In unknown compare problems, the…

This study analyzes middle school students' spontaneous mathematics-related help-seeking behavior, in view of making ecologically valid recommendations for the design of supporting tools or "help systems". Our aim was to investigate the content of students' help-seeking messages--Are there different forms of help-seeking messages and do…

The aim of this study was to show how general models of text production can account for argumentative text planning. It focuses in particular on retrieval process in 11- to 18-year-old children. Various experimental situations were designed to promote different ways of retrieving ideas from long-term memory. Essays written by students were…