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…

This study examines differences in English language comprehension, reading fluency, and executive functions among Spanish-English bilinguals with reading difficulties. Reading difficulties examined included general reading difficulties, defined by low word reading and reading comprehension, and specific-reading comprehension difficulties, defined…

This study examines differences in English language comprehension, reading fluency, and executive functions among Spanish-English bilinguals with reading difficulties. Reading difficulties examined included general reading difficulties, defined by low word reading and reading comprehension, and specific-reading comprehension difficulties, defined…

International research suggests that early mathematical competences predicts later mathematical outcomes. In this paper, we build on our previous study of young children's mathematical competencies (MacDonald & Carmichael, 2015) to explore the relationship between mathematical competencies at 4-5 years, as measured by teacher ratings, and…

This article presents two studies investigating the role of executive functioning in written text comprehension in children and adolescents. In a first study, the involvement of executive functions in reading comprehension performance was examined in normally developing children in fifth grade. Two aspects of text comprehension were…

This is an executive summary of a longer report: "AISD Prekindergarten Program Longitudinal Summary Report Issue 2: Half-Day versus Full-Day Programs." In the Austin Independent School District, full-day pre-K students from the 2001-2002 cohort were more likely to pass the 2010 Texas state assessment for 7th-grade reading TAKS than were…

This study investigated some of the underlying factors that may relate to and predict the reading comprehension of children in fourth through eighth grade (N = 47). A subset of these children previously had been diagnosed with autism spectrum disorders (ASD; n = 10); the remainder are classified as typically-developing (n = 37). The participants…

Full-day pre-K students from the 2001-2002 cohort were more likely to pass the 2010 7th-grade reading TAKS than were kindergarten students from the 2002-2003 cohort who were assumed eligible for pre-K but did not attend pre-K in 2001-2002. There is a full report and a separate executive summary report. [For the executive summary of this study, see…