Thirty-six kindergartners were asked to respond to questions and construct figures designed to test their knowledge of hierarchical relations. Subjects had considerable knowledge of subset and superset classification, and could draw transitive inferences with little difficulty; however, they appeared to have little appreciation of the asymmetry…

Twenty-two children (ages 5-8) with mild mental retardation who received learning set instruction on unidimensional classification and seriation improved on these precursors to concrete operations; 22 children who received more conventional instruction did not. Improvement on classification and seriation was accompanied by improvement on measures…

This study investigated: (1) the level of thinking of the Iteso Primary School children in Uganda; and (2) whether abilities involved in the Piagetian tasks of conservation, classification, and seriation develop at the same rate. The subjects, ages 6 to 13 (the period of the 7-year African primary school) were interviewed in their own language and…

Studied effectiveness of instruction in seriation and classification for kindergartners cognitively lagging behind their peers. Found that extensive classification and seriation instruction in a variety of formats was particularly helpful in facilitating cognitive gains for struggling kindergartners. Individualized instruction provided children…

Six mildly and moderately retarded children (ages 6-8) were instructed in the Piagetian constructs of unidimensional classification and/or seriation using the "Piacelleration" learning set technique. After one semester, subjects made significant gains on: classification and seriation tasks, the Peabody Picture Vocabulary Test, and the…

Describes longitudinal study of the development of understanding of two logical properties of number by 36 children during the first three years of primary school in Glasgow. Piagetian tests and number skills tests were administered to explore the acquisition of number as class and number as order concepts. (Author/LRW)

Whether physical activity and verbal communication would affect kindergarten students' scores on the Metropolitan Readiness Tests (MRT) was investigated. Twenty subjects were administered Level I of the MRT when they entered kindergarten. For 5 days per week for 4 weeks, the 10 subjects in the experimental group worked at constructive play tasks…