Studies of concept formation in infancy have demonstrated that certain experimental settings can elicit spontaneous behavior from infants which has been called "sorting" or "object grouping". This study pursues the issue of early sorting with infants as young as 6 months, and with a broader range of stimuli than has been used…

To investigate how a child organizes new objects and how categories function for a chid, twelve 6- and twelve 8-year-olds were individually given several sorting tasks involving 21 three-dimensional nonsense objects. The child was exposed to all the objects; three objects were pointed out and withdrawn; and then the child was asked to describe…

Study concerned with the effects of procedural differences on the classification of geometrical stimuli. (Author)

The development of multiplicative classificatory skills in children between 4 and 9 years of age was investigated by means of two forms of the matrix-completion task. (Authors)

The most significant finding is that classification according to complete similarity not only occurs much earlier than reported by Inhelder and Piaget, but also does not follow the developmental course reported by Inhelder and Piaget. (Author)

Investigated the development and fragmentation of categories over chronological and mental age without the requisite of free recall. Kindergarten, fourth grade, ninth grade and retarded students labeled and categorized chromatic slides of picturable objects. (GO)

A grouping task revealed a chronological progression: color and form determined the 4-year-old children's grouping about equally; form dominated in the 5-year-olds; and 9-year-olds grouped primarily by conceptual attributes. Performance on a memory task showed the developmental shift from color to form to concept, while cued recall showed…

This paper examines several recent lines of research concerning category clustering and describes an alternative to the standard category clustering procedure used to study recall organization in younger children. The specific issue considered is the age at which children first show evidence of spontaneous category clustering in their free-recall.…

The present study investigated the relationship between developmental shifts in the organization of materials and developmental changes in deliberate strategy use. Second- and fourth-grade children were presented with clusterable sort/recall lists representing the factorial combinations of high and low inter-item association and high and low…

During socialization, individuals begin to understand increasingly broader and more abstract units of personal and social reality. Subjects (N=97) ranging in age from 13 to late middle age completed a linguistic task in which they could impose higher order conceptions on lower order descriptions by identifying different level similarities within…

This study was designed (1) to determine differences in classificatory skills of low socioeconomic status children under intervention and non-intervention conditions; (2) to determine differences in classification skills of bilingual, biliterate, and monolingual students; and (3) to study differences in classificatory skills as a function of age.…