Impaired procedural learning has been suggested as a possible cause of developmental dyslexia (DD) and specific language impairment (SLI). This study examined the relationship between measures of verbal and non-verbal implicit and explicit learning and measures of language, literacy and arithmetic attainment in a large sample of 7 to 8-year-old…

Thirty 4- and 5-year-olds with specific language impairment (SLI) and 30 normally developing peers participated in a discrimination learning-shift paradigm. Both groups were equally successful in extracting regularities from recurring nonverbal stimuli and in making shifts. Findings failed to provide evidence that children with SLI are less able…

A six-year-old nonvocal girl with autism who had acquired a variety of signs and imitative responses consistently failed to acquire a tact (labeling) repertoire. When procedures to transfer stimulus control from verbal to nonverbal stimuli were implemented, the subject quickly learned to tact all 18 target stimuli. (Author/DB)

This study investigated the premise that disordered temporal order perception in retarded readers can be seen in the serial processing of both nonverbal auditory and visual information, and examined whether such information processing deficits relate to level of reading ability. The adult subjects included 20 in the dyslexic group, 12 in the…

This article explores the effect of augmentative and alternative communication systems on literacy acquisition by young children with severe speech and physical impairments. The possibility of a relationship between the type of graphic symbols used for communication as a preschooler and the child's early reading competency is considered. (DB)

After intensively studying for several years the thinking processes of members of a tribal group in Western Africa, the Kpelle, the authors examine the relation between culture and cognitive development. The following issues are discussed: (1) an analysis of the terms "culture" and "cognition"; (2) an ethnographic description of the Kpelle…