In four parts, this discussion describes characteristics of the thought of infants, preschool children, primary school students, and adolescents. Topics briefly addressed in part I, on the thought processes/capabilities of babies, concern sensorimotor thought without abstraction, the importance of physical exploration, the development of…

Two sections in this survey of research on conceptualization are devoted to "Recent Conceptual Studies in the Behaviourist Mould" and "Main Stream of Ontogenetic Studies of Conceptualization." Under Section I, topics investigated are behaviourist approaches to the conceptual process, conceptual problems, and developmental…

Papers presented at a Loyola University Symposium, part of a series on human growth and development, are published in this volume. The papers are: (1) "Some Aspects of Operations," by Jean Piaget; (2) "Operational Thought and Social Adaptation," by Peter H. Wolff; (3) "Fundamental Education," by Rene A. Spitz; (4)…

A review of Piaget's theory and research on children's cognitive development is presented, including a discussion of the psychological structures of intelligence, developmental constructivism, and the evolution of knowledge as a subject-object relation. Piaget's assessment techniques are summarized, including moral development, number…