The study of 813 learning disabled children (ages 6-11) with test-retest data (after three years) on 224 children found the children to suffer a progressive deterioration in verbal ability whereas their nonverbal ability showed an increase in the earlier years, leveling off thereafter. (Author/DB)

This study addressed the extent to which performance on selected verbal and nonverbal measures contributed to the prediction of inflection learning with 20 normal boys (ages 4 to 5). Results suggested that inflection learning may be tied more to other language abilities than to nonverbal cognitive skills in normally developing boys. (DB)

Brain research indicates that sensory-motor experiences during childrens' preschool and early school years may be the foundation for later language development. (MLF)

The study examined whether the development of receptive language lags behind nonverbal cognitive development in school age persons with mental retardation. Results indicated that the relationship between receptive language and mental age varied across mental age levels, linguistic forms, and individuals at the same mental age for listeners with…

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…