Investigated with 58 gifted children (in grades 5 or 6) were differences in right and left hemispheric brain functions in the context of J. Piaget's theories of stages of cognitive development. (DB)

Tests the developmental memory lag hypothesis with 22 learning disabled boys on two- and three-dimensional nonverbal tasks. Finds age-equivalent recall patterns similar to those of normal children and consistent age-related differences in nonverbal recall, thereby negating the developmental lag hypothesis. (RL)

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…