Self-regulation forms the rudiments for children's academic achievement and socialization. Although one's executive control and verbal skills are needed in both of the core aspects for academic performance: processing to regulate one's own learning and behavior, young students' cognitive capacity for that is still immature influencing the…

In this article we present a new method for estimating children's total vocabulary size based on a language corpus in German. We drew a virtual sample of different lexicon sizes from a corpus and let the virtual sample "take" a vocabulary test by comparing whether the items were included in the virtual lexicons or not. This enabled us to…

The present study examined the role of language capacities in explaining differences in social information processing (SIP) among three school-age groups: high-functioning children with autism spectrum disorder (ASD, IQ > 75), children with specific learning disorder (SLD), and children with typical development (TD). Participants were 96 boys…

The importance of fraction knowledge to later mathematics achievement, along with U.S. students' poor knowledge of fraction concepts and procedures, has prompted research on the development of fraction learning. In the present study, participants' (N = 536) development of fraction magnitude understanding and fraction arithmetic skills was assessed…

In order to reach gender equity in the gifted population, an affirmative action policy was instituted in Israel to increase the number of girls identified as gifted. The purpose of this study was to compare the self-efficacy beliefs of girls in the top 1.5% (gifted girls (GG)) with those of girls in the top 3% (GG in affirmative action). It was…

The goal of the present article is to synthesize findings to date from the Delaware Longitudinal Study of Fraction Learning. The study followed a large cohort of children (N = 536) between Grades 3 and 6. The findings showed that many students, especially those with diagnosed learning disabilities, made minimal growth in fraction knowledge and…

New findings are presented for children in Grades 1 to 9 who qualified their families for a multigenerational family genetics study of dyslexia (impaired word decoding/spelling) who had either superior verbal reasoning ("n" = 33 at or above 1 2/3 standard deviation, superior or better range; 19% of these children) or average verbal…

The purpose of the present study was to reveal the developmental pathway from third grade cognitive competencies to sixth grade conceptual and procedural fraction knowledge through the intervening whole numerical skills at fifth grade. The study used empirical data that come from 536 students in nine schools across two Delaware public school…

The simple view of reading posits that reading comprehension can be decomposed into a print-specific component (concerning decoding and sight word reading) and a language comprehension component (concerning verbal and metalinguistic skills not related to print). One might properly consider lexical skills, indexed by vocabulary measures, part of…

Two studies were conducted to explore mathematical precocity in young children. Study 1 examined mathematically gifted first and third graders' working memory development. The results showed that mathematically gifted children's working memory growth was similar to that expected of their age peers. Study 2 examined changes in mathematically gifted…