Investigated the development of reorientation abilities in humans in contrast to other mammals. Findings support the domain specificity of human's core cognitive abilities, the conservation of cognitive abilities across related species and over the course of human development, and the developmental processes by which core abilities are extended to…

Examines the influence of sign language structures on the spontaneous use of time and space markers in French and French Sign Language. The study compared the use of nonspatialized utterances and spatialized structures of deaf and hearing children, adolescents, and adults. Findings shed light on the different types of errors in understanding. (17…

Two studies explored how mothers and preschoolers talk and reason about events in which biological and nonbiological objects change in size. Analysis of conversations indicated that although mothers discussed events primarily in domain-specific ways when using the term growth, they exhibited some domain blurring in explanations to preschoolers.…

This study compared perceptions of relationships with parents, best friends, siblings, and imaginary companions among 4-year-olds with invisible friends, object companions, or no imaginary companion. Findings indicated that parents afforded instrumental help, and siblings were associated with conflict. Real and imaginary friendship provisions were…

This longitudinal training study explored impact of social scaffolding on emergence of graphic symbol functioning and links among graphic, language, and play domains in symbolic development. Findings support view that graphic symbolic development can be influenced by cultural scaffolding, that more extensive training is needed early rather than…

Investigates 14-year-old students' ability to recognize argumentation without having systematic instruction; and whether the identification of argumentation is an independent skill. Finds that after a 20-minute explanation, a large proportion of 14-year-olds could not identify simple argumentation. Concludes that identifying argumentation is a…

The influence of cultural practices on the cognitive development of largely unschooled children was investigated among 23 candy sellers and matched non-vendors between 10- and 12-years-old who resided in northeast Brazil. Findings are interpreted as supporting a model of cognitive development in which children construct novel understandings while…

Compared parental perceptions of the use of internal information sources--intuitions, religious beliefs, personal childhood experiences--to use of external sources for information about their toddlers' development. Found that parents perceived the internal sources as being used more frequently and as more useful for information on their child's…

Tested hypothesis that living on campus fostered cognitive growth by estimating relative first-year gains in reading comprehension, mathematical reasoning, and critical thinking of resident (n=40) and commuter (n=170) first-year college students. Controlling for precollege cognitive level, academic motivation, age, work responsibility, and extent…

Examined whether toddlers would use information presented through video to solve a retrieval problem. Found that 2.5-year-olds were very successful at finding a hidden toy based on viewing a televised hiding event, but 2-year-olds were not. Substantially better performance was achieved by other 2-year-olds who either watched or believed they were…

Discusses some general-causal assumptions of current neo-Piagetian research and compares them with those of French European developmentalists with regard to individual differences, developmental stages, and methodology. Discusses the developmental unfolding of mental attentional mechanisms. Highlights developmental theory problems for the…

Investigated possible priming effect of two neuropsychological tests, the Booklet Category Test (BCT) and Wisconsin Card Sorting Test (WCST). Obtained counterbalanced order effects on like-aged sample of 63 South African elementary school students (normally- achieving, low-functioning, learning-disabled). Found a significant effect of set-shifting…

Examined the development of children's conceptual understanding of attention by focusing on their awareness of various subtypes of attention. Found three changes with increasing age: (1) less emphasis placed on surface features of scenarios used in similarity judgments; (2) more attentional subtypes identified; and (3) more emphasis placed on the…

Examined major discriminating factors for cognitive development in high-IQ and low-IQ children in child care who had been adopted after age four. Found that birth rank, maternal mental retardation, pregnancy/delivery complications, severe prematurity or low birthweight, and number of hospitalizations differentiated the two groups. Over time, IQs…

Examined phonological processing in a Chinese reading test and on several phonological processing tasks. Found that younger normal and poor readers of Chinese made more semantic and visual errors, whereas older and normally achieving children made more phonologically related errors. Normally achieving readers also performed better than poor…