Compared the performance of 29 institutionalized cultural-familial mental retardates on Piagetian conservation tasks. Examined the effects of age, sex, and degree of retardation on conservation performance. (BD)

Reviews Piagetian concepts, the identification of student cognitive level of development, and chemistry instruction. (SL)

Discusses instructor considerations to be made concerning student cognitive development in preparing and teaching introductory chemistry. (SL)

Chronically undernourished children of low socioeconomic status participated in a treatment program combining nutritional, health care, and educational features. By school age, the gap in cognitive ability between the treated children and a group of privileged children had narrowed. The effect was greater for the youngest preschoolers entering the…

This paper provides a log and discussion of experiments conducted by a five-and-one-half-year-old child under the direction of the author. (SD)

The development of children's comprehension of cause and effect relationships was studied in 68 kindergarten, first grade, and second grade children. (BRT)

Normal infants were administered the Bayley Scales of Infant Development at 6 months and the Stanford-Binet Intelligence Scale at 3 years. At 6 months the quality of stimulation found in the early environment was measured. Results indicate that home environment may contribute to instability of performance on infant tests. (GO)

Major concepts embodied in moral development literature are reviewed. (MJB)

This research studied the relation between mastery of the words "and" and "or" and performance on the conjunctive and disjunctive tasks. A definition test was used to measure level of mastery of the linguistic terms and a traditional logical test to measure logical task performance. Results are related with ability to solve logical tasks.…

Specifications are offered for a stage theory of adult cognitive development. Current psychometric technologies are criticized as being limited in descriptions of cognitive function. The development of novel technologies is suggested for study of adult cognitive development. Paper presented at the 10th International Congress of Gerontology,…

Three investigations of preschool children's comprehension of "younger" and "older" are discussed. Results suggest children focus on height in their initial hypotheses about meanings of the terms, ignoring age or function cues. These and findings about acquisition of antonyms are discussed in terms of recent theorizing about lexical-meaning…

Children's understanding of the nature of polar terms and comparative terms between the polar opposites is discussed. (CHK)

This study examined the construction of a mobile with plastic construction straws in order to study the development of tree representations in a domain other than language. Subjects were 70 children between the ages of 3 and 11. (Author/JMB)

Two studies with first- and fifth-grade children in two learning tasks showed that preoperational children did not necessarily learn responses followed by a stimulus object previously instrumental in obtaining a reward, while postoperational subjects did. (Author/JMB)