Results indicated that availability of categories rather than frequency of words seemed most crucial in determining developmental changes in clustering efficiency. (Authors)

Four hundred subjects 8 to 11 years old were given a modification of the Weigl Color Form Sorting Test in an attempt to assess the influence of chronological age, mental age, intelligence, and vocabulary level on the ability to utilize various numbers and different kinds of criteria of classification. (Author/MP)

Among third, fourth, and fifth graders tested, performance on embedded figures and leveling-sharpening tests correlated with performance on traditional items of class inclusion, suggesting that psychological differentiation is related to reasoning by class inclusion. However, age changes in differentiation do not account for age changes in class…

Robust interference effects were found which declined with age. Manipulating discriminability of the relevant stimulus dimension resulted in large changes in sorting time, but interference effects did not vary with baseline difficulty. These results were interpreted as strongly supporting both an absolute decrement model and a developmental trend…

Explores the utility of reciprocal two-point code type classifications of Personality Inventory for Children (PIC) profiles and evaluates a second classification scheme based upon groupings of empirically and conceptually similar PIC code types. Results indicate a profile classification strategy can be usefully applied to PIC protocols. (Author)

The relationship between categorical organization and recall for children in grades 2, 4, and 6 and for adults was investigated using the sorting-recall procedure. (MP)

Five experiments investigated whether children, ages three to eight, think of pretending as a mental state. Results indicated that most children under six see pretending as primarily physical. Eight-year-olds claimed that execution of pretense did not involve the mind, although the planning aspect of pretense did. (MOK)

Five experiments used a categorization habituation-of-looking paradigm to investigate infants' categorization of animals and vehicles based on static versus dynamic attributes of stimuli (color images versus dynamic point-light displays). Findings showed that 6-month-olds categorize animals and vehicles based on static and dynamic information, and…

Examined the effects of a 10-week art appreciation curriculum on 17 preschool children's levels of self-esteem, art involvement, and art appreciation. Pre- and postintervention tests demonstrated that, as a result of the curriculum, the children's self-esteem increased and that they displayed greater interest and knowledge of art. (MDM)

Two experiments investigated whether preschoolers attend to appearance instead of taxonomic relations in sorting sets of objects with conflicting appearances and taxonomic relations. Found that training and instructions have a significant effect on children's preference for sorting according to taxonomic relations or appearance, and that both…

Hypothesized that, unlike second graders, most fourth graders are aware of the usefulness of category organization as a retrieval strategy and begin to deliberately activate category knowledge as a memory strategy during retrieval. Results of three experiments supported this theoretical view. Strategic competence is not mature among fourth…

Demonstrates the need for a process-oriented, constructivist approach to understanding infants' categorization abilities. Suggests that emphasizing the distinction between perceptual and conceptual categorization has been an obstacle to forging an approach. Proposes a more microanalytic consideration of features available to infants at different…

Examined degree to which analytic and holistic modes of processing play a role in children's and adults' categorization of faces. Found a developmental trend from analytic to holistic processing and an effect of face inversion with increasing age. Seven-year-olds processed faces comparably to nonfacial visual stimuli, whereas a growing proportion…

Thirty-seven students who were blind or had low vision listed as many examples of 10 categories as they could and the prototype order of examples was scored. No differences between blind or low-vision students were found, but categories with which the students had a greater degree of direct sensory experience produced more examples and higher…

From Aesop to Sun Tzu, the importance of working together has long been acknowledged. Yet as long as cooperation has existed, so have the difficulties associated with it. Pooling two fields might mean twice the power, but this union also brings twice the jargon, twice the competing theories, and twice the head butting. Nonetheless, in this…