Three studies examined theory-of-mind concepts among children ages 6-13 years with deafness or autism, and 4-year-olds with normal development. Findings indicated that while the children with deafness or autism scored significantly lower on standard tests of false belief understanding, they scored higher on even the most challenging drawing-based…

Examined developmental and individual differences in tendencies to favor analytic over heuristic responses in three tasks (inductive reasoning, deduction under belief bias conditions, probabilistic reasoning) in children varying in age and cognitive ability. Found significant increases in analytic responding with development on first two tasks.…

Results of five experiments showed that in certain situations recall varied with processing difficulty for both children and college students. This was primarily due to enhanced cue discriminability. The relation between processing difficulty and developmental increases in recall seemed to be mediated by constructability problems and resource- and…

Examined the role of individual differences in working memory and lexical access in age- and reading skill-related differences in performance on phonological synthesis tasks. The performance of 28 kindergarten, first-, and second-grade students with normal reading skills, and that of 28 reading-disabled second graders, was compared under four…

Investigated development of working memory in the transitional period from infancy to preschool years. The age-related increase in scores on the Imitation Sorting Task (IST) appeared to be about one unit every six months. Results suggest that the IST has a good construct validity. (AA)

Examined the relationship of maternal interaction and private speech to task performance, using a sample of four- and five-year-old children. Findings underscore the positive, self-regulatory function of private speech, highlight the role of adult communicative support in extending the child's competencies, and call attention to the cognitive and…

Performance of congenitally blind children and blindfolded children was compared on tasks requiring spatial reasoning and shape recognition. Blind subjects performed at least as well as blindfolded subjects on simple two-dimensional tactual processing tasks, but less well on more complex tasks requiring them to store, compare, and label objects.…

A comparison of 33 Australian adolescents with Down syndrome who did not receive early intervention services and 41 adolescents with Down syndrome who had received early intervention services found no significant difference between the two cohorts in cognitive functioning. Socioeconomic status, mothers' education, and gender were predictors of…

Studied the effect of homelessness on cognitive and academic functioning of children 6 to 11 years old in comparison to a control group of housed children in the same classroom. Found no differences in cognitive functioning between homeless and housed children, but did find that homeless children performed significantly more poorly than housed…

Presents ideas about how the workplace affects job performance, how to diagnose workplace-related problems, and how to make modest improvements. Highlights include: workplace-imposed limits on performance; the mental and physical steps of work; screening behavior; how adaptation interferes with performance; task- and human-based workspaces;…

Two experiments examined developmental changes in reasoning about intensive quantities--predicting mixture intensity of pairs of liquids with different intensities of red color. Results showed that cognitive averaging in this domain developed late and slowly. Predominating up to 12 years was an extensivity bias, a strong tendency to use rules that…

Verbal and behavioral measures of children's knowledge are frequently dissociated. These situations represent a largely untapped but important resource for furthering an understanding of human cognition. In this paper, verbal-behavioral dissociations in children are discussed and analyzed, drawing from a wide range of domains. The article explores…

Students' goals (motives) for their schooling have been the focus of much recent research and have been shown to significantly influence important aspects of their cognitive engagement and academic achievement. This paper presents the results of a qualitative investigation into the nature and characteristics of students' social and academic goals,…

The role of performance assessments in making cognitive activity apparent to teachers and students was studied through descriptions of the cognitive activity of 31 fifth-grade students. Differences while carrying out a science performance assessment reveal critical differences between those who think and reason well with their knowledge of…

Methodological issues in the use of protocol analysis for research into human problem solving processes are examined through a case study in which two students were videotaped as they worked together to solve mathematical problems "out loud." The students' chosen strategic or executive behavior in examining and solving a problem was…