Background: In this work we sought to expand our knowledge of developmental trajectories of subcomponents of the language systems of individuals with intellectual disability (ID). We aimed to explore how "general" and "relational" vocabularies evolve as a function of cognitive level. Method: Developmental trajectories of…

Two experiments were conducted to investigate the effects of expecting immediate grades on numerical and verbal reasoning performance and the moderating role of achievement goals. Anticipated grade proximity (immediate vs. 1 week later) and goal orientation (approach vs. avoidance) were manipulated with instructions. Experiment 1 showed that…

A total of 29 low-income, prekindergarten children, attending a summer school program, participated in a six-week shared book-reading (SBR) intervention. Children were randomly assigned to one of four conditions that varied in the extent to which teachers embedded an explicit emphasis on print (code-focused interactions), vocabulary…

Purpose: This study investigates the heritability of language, speech, and nonverbal cognitive development of twins at 4 and 6 years of age. Possible confounding effects of twinning and zygosity, evident at 2 years, were investigated among other possible predictors of outcomes. Method: The population-based twin sample included 627 twin pairs and 1…

Theory of mind is one of the most important cognitive factors in social information-processing, and deficits in theory of mind have been linked to aggressive behavior in childhood. The present longitudinal study investigated reciprocal links between theory of mind and two forms of aggression--physical and relational--in middle childhood with three…

Research on individuals severely affected by autism, including those who are minimally verbal, have intellectual disability or challenging behaviors, has become less common. The Autism Inpatient Collection (AIC) was initiated so data on this group is available to the research community. Ten studies utilizing phenotypic data from the first 350 AIC…

The researchers investigated the effects of adult language input on the quantity of language, vocabulary development, and understanding of basic concepts of deaf and hard of hearing (DHH) children who used listening and spoken language. Using audio recording and Language ENvironment Analysis (LENA) software, the study involved 30 preschool DHH…

Although reading outcomes for children with hearing loss are improving, too many of these children continue to display persistent reading difficulties. Because of these difficulties, there is an ongoing need to understand the nature of the relationships among decoding abilities, language skills, and reading achievement in this population more…

This longitudinal study considers the contributions of language awareness to children's learning to read and spell. The aim of the study was to examine whether the connection between phonemic awareness and literacy in Greek is constant over time even when appropriate controls are taken into account. I examined this hypothesis with Greek Cypriot…

Bilingual experience has an impact on an individual's linguistic processing and general cognitive abilities. The relation between these linguistic and non-linguistic domains, in turn, is mediated by individual linguistic proficiency and developmental changes that take place across the lifespan. This study evaluated this relationship by assessing…

This work uses exploratory and confirmatory factor analyses to study Verbal Skills Development Teacher Self-Efficacy Scale (VSDTS), Reading Skills Development Teacher Self-Efficacy Scale (RSDTS) and Writing Skills Development Teacher Self-Efficacy Scale (WSDTS) developed to identify classroom teacher candidates' perceptions of teacher…

The objectives of this study were to examine (a) differences in figurative language, analogical reasoning, executive functions (EF), theory of mind (ToM), and local/ central coherence (LCC) of children with high-functioning autism (HFA; n 32) and typically developing (TD; n 32) children; (b) improvement of figurative language using dynamic…

Visual cognitive style is an individual difference that is related to the preference or visual imagery tendency of an individual of processing visual information. This study examines the visual cognitive styles of university students according to their study subject, study year and genders and includes 448 first- and third-year university students…

We describe the performance of 292 4- to 17-year-olds with Williams syndrome (WS) on the Kaufman Brief Intelligence Test-2 (KBIT-2; Kaufman & Kaufman, 2004). Mean IQ Composite, Verbal standard score (SS), and Nonverbal SS were in the borderline range relative to the general population, with variability similar to the general population.…

"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…