There is growing interest in the link between implicit statistical learning (SL) and reading ability. Although learning to read involves both auditory and visual modalities, it is not known whether reading skills might be more strongly associated with auditory SL or visual SL. Here we assessed SL across both modalities in 36 typically developing…

The purpose of this study is to construct and evaluate diagnostic battery tests of verbal and non-verbal learning disabilities for students in the Arabic schools. 612 students were in the 3rd, 4th and 5th grades of primary school were involved, mostly from Egypt and Saudi Arabia. Their ages ranged from 7.94-10.98 with mean age = 9.62 and SD =…

Background: Few investigations have examined the relationship between a comprehensive range of executive functioning (EF) abilities and reading. Aims: Our investigation identified components of EF that independently predicted single word reading, and determined whether their predictive role remained when additional variables were included in the…

It has been suggested that children with nonverbal learning disabilities (NLD) or Asperger's Syndrome (AS) may show difficulties with executive functioning. There were 3 groups in this study who completed a neuropsychological battery of visual-spatial, executive functioning, and reasoning tasks; AS (n = 37), NLD (n = 31), and controls…

In this study we characterized profiles of communicative functions and forms of children with autism and intellectual disability (n = 26), as compared to typically developing children (n = 26) with a comparable nonverbal mental age (2-5 years). Videotapes of the Communication and Symbolic Behavior Scales--Developmental Profile were analyzed using…

Current theories of category learning posit separate verbal and nonverbal learning systems. Past research suggests that the verbal system relies on verbal working memory and executive functioning and learns rule-defined categories; the nonverbal system does not rely on verbal working memory and learns non-rule-defined categories (E. M. Waldron…

Previously researchers have noted a high level of occurrence of the IQ profile associated with nonverbal learning disability (NLD) in Asperger syndrome (ASP) but not in high functioning autism (HFA). We examined the IQ profile scores of a large sample of children (n=69) and adults (n=77) with HFA, stringently diagnosed according to ADOS, ADI-R,…

Analogical reasoning--perceiving similarities in different situations and the transfer of such information--facilitates learning and understanding. However, children with learning disabilities (LD) typically demonstrate deficits in such information processing strategies. In this study, we investigated the analogical problem-solving differences…

This study examined the effectiveness of using "subject-performed tasks" to improve memory efficiency of eight autistic children. The procedure involved instructing children to carry out and later remember a series of actions. The procedure's effectiveness was attributed to autistic subjects' lack of verbal encoding strategies and…

Two studies examined executive functions in children with autism. Results indicated that subjects performed like normally developing children when either no arbitrary and novel rules were involved or the output was verbal. Results support the hypothesis that these children are challenged by executive tasks because they are unlikely to encode rules…

Investigated the ontogenesis of oddity learning. Children and adults were tested on two versions of the oddity task using nonverbal procedures. Results suggested that children use different strategies to solve different versions of the oddity task, and in tasks in which stimuli are presented simultaneously, behavior may be controlled by stimulus…

Content analysis of the Columbia Mental Maturity Scale and the Test of Nonverbal Intelligence (TONI) revealed differences in the nature of perceptual and conceptual items. Both language-impaired and normal-language children performed significantly better on perceptual-type than conceptual-type items. The predominance of perceptual items was…

The follow-up study of 16 nonretarded autistic children as adults found that, though most were functioning poorly in terms of occupational-social outcome and psychiatric symptoms, four had essentially recovered. Severity of early autistic behavior was a poor predictor of outcome, but neuropsychologic measures of nonverbal problem solving were…

The profile of spatial ability is of interest across autism spectrum disorders (ASD) because of reported spatial strengths in ASD and due to the recent association of Asperger's syndrome with Nonverbal Learning Disability. Spatial functions were examined in relation to two cognitive theories in autism: the central coherence and executive function…

A series of exploratory studies and three experiments dealing with conceptual rule learning are reported in this paper. Discussants related the results to subject matter fields and to educational research and development. Four groups of subjects, five to twelve years old, solved six rule learning problems. It was concluded that younger children…