It was hypothesized that Piaget's argument on behalf of the reorganization of cognitive processes would gain empirical support from a color/form, matching similar objects problem for 52 6-year-olds from a variety of socioeconomic backgrounds. (Author/MS)

This study compared the use of discrete and relational aspects of visual configurations in making similarity judgments. Subjects were 3-, 4-, 5-, and 8-year-old children and adults. (BD)

This study investigates the developmental changes that occur in the attending behavior of children engaged in a relatively simple classification task, and attempts to reaffirm the existence of developmental changes in stimulus preferences and in the ability to employ double classification systems. Subjects were 24 preschool and 24 first grade…

This exploratory study was conducted to interpret age and individual differences in 48 kindergarteners' and second graders' performance on a referential communication task in light of the Pascual-Leone Theory of Constructive Operations, a neo-Piagetian theory of cognitive development. Stimulus materials were black and white photographs of dogs,…

In a study of attending behavior during the crossover period (12-13 years), when preferences shift from auditory to visual stimuli, females switched their preferences significantly earlier than did males. Besides biological factors, these sex differenes were attributed to differential conditioning of attitudes, reinforcement, and discrimination…

This paper examines the concept of decalage from two cognitive-change positions (structures of logical thought and attentional and verbal mediators) and proposes an alternative explanation for decalage from a perceptual-change point of view. The term decalage is used to summarize the relation between differences in performance of various age…