This study explores the acquisition of proportionality by investigating the relationship between an understanding of proportionality and the development of cognitive structure in the domain of mechanics. (Author/MA)

Deals with Piaget's research and theory over the past five decades. The purpose of the paper is to identify important aspects of Piaget's work and to refer the reader to sources readily available in books and periodicals. These are outlined in the annotated bibliography at the end of the paper. (Author/MA)

Early mental development of twins and siblings is analyzed, from an evolutionary viewpoint and related to the interplay of genetic programing, maturational status, and environmental influence. (MP)

Five-year-old children were trained on the length relationships between adjacent members of a five-term series of sticks, and subsequently tested on their abilities (1) to judge the length relationships between nonadjacent pairs of the series, and (2) to incorporate an unseen novel stick into the series through inference. (CM)

A study of the interrelationships of teacher assessment values, student syntactic maturity and student cognition. (DD)

This article summarizes the major concepts of the cognitive theory approach and describes several treatment procedures that can be used in social casework with a cognitive orientation. (Author)

The paper reports on a study in which it was shown that the sensori-motor capacities of 10-year-old intellectually handicapped children (n equals 18) are more correlated to mental development than to physical growth and development. (Author/SBH)

Jean Piaget's theory of genetic epistemology is criticized from a philosophical point of view. (JD)

The viewpoint is advanced that induction is a determing factor in the way knowledge is acquired and that in the acquisition of a language and the development of knowledge this process plays a crucial role. (JD)

The occurrences of beginning reading strategies outside of official classroom reading time reveals that children are more advanced in reading development than is generally assumed from the curricula, the materials, and tests usually given to first graders. (JD)

Suggests English teaching activities to which students must respond using the neural functions in both hemispheres of their brains. (DD)

The author argues that many who speak to the issues of elementary-school mathematics are not aware of the real problems. The clear objective of the teacher of young children is to provide them with experiences which will enhance their development. (SD)

Sixty normal and psychiatrically hospitalized adolescents were tested for multiple self image using a specially designed Q sort technique, initially and then every 6 months for 12-18 months. Each subject's self image was analyzed in terms of complexity. (Author/DEP)

Results indicated that after partialing out CA and MA, number of years in the institution was negatively correlated with success in visually directed object manipulation, social imitation, and purposeful, constructive activities for 103 profoundly retarded residents. (Author/JMB)