Presents arguments for oral language work in classrooms that go far beyond "the principal means of human communication" justification. Topics discussed include relationships between oral language and literacy, intelligence, problem solving, cognition, "the hypothetical mode of learning," and personality growth. Recommendations…

Presents a working definition of negativism and a reconstruction of its development in the first year of life. New issues concerning the origins and nature of negativism are raised in the light of recent findings concerning attachment, autonomy, and temperament. Special attention is given to the development of "No" and symbolic negation.…

This paper presents and evaluates the broad results of pre-school intervention experiments and programs aimed at fostering the intellectual and social development of "disadvantaged" groups. Among the general findings discussed are (1) there is a "sensitive," or even "critical," period in child development, an age at…