Examined seriation, conservation, and theory of mind abilities in 16 adolescents and adults with autism, in 16 adolescents and adults with mental retardation, and in 16 normally developing children. Found that participants with autism performed better than participants with mental retardation on seriation, while no differences emerged between…

Two experiments were carried out in which groups of children (mean age = 68 months) were matched on number, length, mass, and liquid conservation scores and then trained on a distance-layout task developed by Inhelder et al (1974). (Author/MP)

The inclusion of group activities based on theories of cognitive development within day care settings is urged. Several examples of classroom-tested activities are included. (ED)

On the basis of these findings, both the measurement techniques of previous studies and Piaget's analysis of seriation are challenged. (Author)

GRADES OR AGES: Four-, five-, and six-year olds. SUBJECT MATTER: Cognitive areas of symbolism, classification, conservation, seriation, spatial relationship, and temporal relationships. ORGANIZATION AND PHYSICAL APPEARANCE: The guide is divided into six sections, one for each of the above cognitive areas. Each section lists materials and describes…

Kindergarten and first-grade children participated in a study of the role of reciprocal and inversion reversibility in language acquisition and cognitive development. Subjects completed cognitive tasks assessing conservation, seriation, and class inclusion, and language tasks assessing the active-passive transformation and the negative…

This study compared the effects of a formal, an open-framework, and a control preschool program on children's intellectual development. The formal program, based on Ausubel's and Piaget's theories, had a daily schedule of short prescriptive teaching sessions followed by related learning activities. The informal program, based on Piaget's theory,…

A 3-year longitudinal study assessed cognitive changes among rural children 3 to 5 years old and validated the construct validity of the Nebraska Wisconsin Cognitive Assessment Battery (NEWCAB). Multistage area sampling techniques were used with a repeated measures, control group design. Participants in the sample were 40 3-year-olds, 57…

Results indicate that within the limitations of this study there is evidence that children with superior" intelligence showed more mature response patterns on Piaget-type tasks than children of the same age with average" intelligence test scores. (Author)

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…

Children aged 2-1/2 to 3-1/2 years in three preschool programs were given a test battery consisting of classification, relations, and conservation tasks. One program (Ausubelian) was formal and two programs (Piagetian and Tradition) were informal. Posttest data for the first year of a three-year longitudinal study indicated significantly superior…

Demonstrated is a covariance principle that causes the observer to assume that if one aspect of a two-dimensional figure (its perimeter or its area) is conserved, the other aspect must also be conserved (pseudo-conservation). Mentally retarded individuals, assuming no such fixed relationship, correctly judged the changed state of the nonconserved…

A study was designed to develop an instrument and methodological procedure to assess transitive relations within seriation problems in elementary school children using three criteria: explanations, judgments, and strategies. A secondary analysis to assess transitivity used the three criteria according to whether the children were conservers, in…