The development of the ability to categorize speech sounds is often viewed as occurring primarily during infancy via perceptual learning mechanisms. However, a number of studies suggest that even after infancy, children's categories become more categorical and well defined through about age 12. We investigated the cognitive changes that may be…

As part of a longitudinal study, infant/toddler pretend play development and maternal play modelling were investigated in dyadic context. A total of 21 children were videotaped in monthly play sessions with their mothers, from age 8 to 17 months. Child and mother pretend play frequencies and levels were measured using Brown's Pretend Play…

This article serves as a primer to make the neuroimaging literature more accessible to the lay reader and to increase the evaluative capability of the educated consumer of cognitive neuroscience. This special issue gives gifted education practitioners and researchers a primary source view of current neuroscience relevant to modern definitions and…

The validity of the fourth edition of the Stanford-Binet (S-B IV) test was studied with 30 linguistically precocious children at ages 20, 24, and 30 months. Validity at 24 months was questionable. Problems in using the test with very young children are discussed. (SLD)

The relationship between children's cognitive developmental level, as assessed by Piagetian tasks, and their performance on measures of intellectual and neuropsychological functioning was studied. Eight female and 22 male children--ages 8 to 12 years (mean=10.3)--with negative electroencephalographs and neurologic screening and no history of brain…

Performance on items in intelligence and achievement tests can be represented in terms of child development and information processes. Research is reviewed on item performance that supports developmental and information processing effects, particularly in children. Some suggestions regarding item development are made. (Author/TJH)

The application of Piaget's theory of cognitive development to the assessment of mental ability of the mentally retarded is presented. Following a discussion of developmental theories and diagnosis of mental development, testing interviews demonstrate the limits of cognitive thought at each of three stages. Abnormal intellectual oscillations are…

Personality development and structure formation were studied in 60 preadolescent children (aged 9 to 13). Six major aspects of preadolescent individuality were assessed: cognitive controls, performance on the Holtzman Inkblot Test, intellectual abilities, general response to clinical testing, general response to laboratory testing, and defense…