Research on mathematics learning is integrated and organized around groups of questions emerging from the primary classroom. Subjects covered include attitudes, diagnosis, readiness, effective use of concrete and manipulative materials, the role of language and vocabulary, presentation of specific content and techniques, selection of algorithms…

Reports on three studies which investigated the development of the concept of horizontality in subjects from nursey school through college age. Normative data collected allowed for evaluation of Piaget's stages and for differences due to age, sex, and apparatus shape and orientation. (ED)

Sinclair-de Zwart's findings on relationships between cognitive and linguistic development were compared with data gathered in Australia from 162 first-, second-, and third-grade Greek-English bilinguals (tested in both languages) and 136 English monoglots in the same classroom. (Author/CS)

Presents a rationale for providing preschool children with experiences related to classification, seriation, and pattern recognition because they are means by which a child can organize the world around him. These are considered to be the early steps in the long developmental sequence leading to logical thinking and reflective observation. (GS)

Investigates the convergence of three measures on a representation of cognitive structure and examines the correspondence between these representations and the representation of subject matter structure. (Author/DEP)

An investigation of Piaget's theory of object concept development through a series of six tasks administered in a combined longitudinal/cross-sectional design (which incorporated a number of methodological controls). Subjects were 36 infants who received the six tasks during each of three testing sessions over a 6-month period. (Author/ED)

Measured the effect of schooling on cognitive skills by comparing the performance of 230, 6-13-year-old Hausa school children on a variety of cognitive tasks to that of 175 like-aged Hausa children who did not attend school. (Author/SDH)

Sex differences in the behavior of infants may have the potential for eliciting differential treatment from adults, regardless of whether or not adults consciously intend to encourage sex-differentiated behavior. The role of biologically-based sex differences in partially determining cognitive development is discussed. Availability information is…

The affective and developmental approaches to moral education are described as inadequate, while the cognitive approach based on moral knowledge, moral reasoning, and the study of ethics is described as defensible and preferable, even though difficult to implement in public schools. (DW)

This article examines child acquisition of syntax through a chronological distributional analysis. The main point is that the development of syntactic relations is neither behaviorist nor pre-programmed but dynamic, and that therefore child linguistic development cannot be described in terms of an innate adult language ideal. (Text is in French.)…

An innovative science program recently developed for use with educable mentally handicapped students was tested on six low-verbal, hearing-impaired secondary students of normal intelligence. (Author)

Research supported by the U.S. Office of Economic Opportunity grant 1492.