This chapter, to be included in "Carmichael's Manual of Child Psychology," edited by P.A. Mussen, deals with the connection between the acquisition of language and the growth of intellect, and the connection between both of these and the process of maturation. The author feels that various theories of development cannot account for the child's…

On the basis of experimental data, the author makes the following observations: (1) the basic encoding processes in speech, the schemas of order, first produce elementary underlying sentences; (2) underlying sentence structure is the controlling step in the organization of speech; (3) underlying sentence structure plays a central role in…