Differences in the social limitations of girls compared to boys on the autism spectrum are still poorly understood. Impaired social-emotional reciprocity is a core diagnostic criterion for an autism spectrum disorder. This study compares sex differences in reciprocal behaviour in children with autism spectrum disorder (32 girls, 114 boys) and in…

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…

Some previous reviews conclude that breastfeeding is not significantly associated with increased intelligence in children once mother's IQ is statistically controlled. The conclusion may potentially have both theoretical and methodological problems. The National Child Development Study allows the examination of the effect of breastfeeding on…

This investigation was aimed at studying the relations between executive functions (EFs) and categorical emotion understanding while controlling for preschoolers' IQ, language ability and theory of mind (ToM). Specifically, we wanted to analyse the association between emotion understanding and set shifting, due to the lack of studies with this EF.…

The objectives of this study were (a) to evaluate parental stress in parents of children with autism spectrum disorders (ASD group) and compare it with the stress in parents of children with typical development (comparison group); (b) to study the relationship between parental stress, autism severity, and both verbal and performance IQ; and (c) to…

Children with significant hearing loss may experience great difficulty developing spoken language and literacy skills to a level commensurate with children of the same age with typical hearing. While studies of children who use cochlear implants show improved spoken language outcomes in some cases, when compared to the same children's earlier use…

There has been significant interest in examining the developmental factors that predispose individuals to chronic criminal offending. This body of research has identified some social-environmental risk factors as potentially important. At the same time, the research producing these results has generally failed to employ genetically sensitive…

Across multiple schools and sites, the impact of grade-at-intervention was evaluated for children at risk or meeting criteria for reading disabilities. A multiple-component reading intervention with demonstrated efficacy was offered to small groups of children in 1st, 2nd, or 3rd grade. In a quasi-experimental design, 172 children received the…

We review the development of the Jamaican home visiting intervention for children under 4 years and its evidence base. The intervention has focused on supporting mothers to promote the development of their children through interacting in a responsive way, labelling the environment and activities. The curriculum is structured and cognitively…

The authors report on two studies showing that the Slosson Intelligence Test yields higher scores than the Peabody Picture Vocabulary Test for both nursery school and third-grade children, indicating that care should be taken when the SIT is used for intellectual screening. (Author)

The Peabody Picture Vocabulary Test (PPVT) was compared to the Wechsler Intelligence Scale for Children, Revised (WISC-R) in a sample of 30 children with reading disabilities who had been referred to a university clinic. All the children completed the WISC-R; nineteen children completed Form A and eleven children completed Form B of the PPVT. All…

Sixteen students (6-26 years old) with developmental dyslexia or hyperactivity and 16 controls were administered the Peabody Picture Vocabulary Test (PPVT) and the Revised test (PPVT-R). Increased numbers of perceptually loaded plates accounted for a decrease in IQ scores for dyslexic hyperactive Ss on the revised test. (CL)

Most striking finding was the mean 10-point IQ incn programs which utilize the discovery of such IQ increases as evidence development

Findings indicated that the Peabody Picture Vocabulary Test and the Revised Beta Examination should be administered as part of a battery to disabled students in special education rehabilitation units. It was concluded that this procedure would be more economical than administering the Wechsler Adult Intelligence Scale. (Author/DB)

Wechsler Preschool and Primary Scale of Intelligence-Revised and Peabody Picture Vocabulary Test-Revised were administered to 51 preschool, kindergarten, first and second grade students. Although two of four Pearson correlations between these two instruments were statistically significant, they may not be of practical importance. (Author)