Experimentally manipulated differences in mental state can systematically alter the linguistic intuitions which speakers render about acceptability of sentences. The processes underlying intuitions must be taken into consideration when they are used as empirical data to test grammatical theories. A theory of introspection must be part of the…

Expanded version of a paper presented at the annual meeting of the Linguistic Society of America, December 1970, in Washington, D.C. Work supported by a Grace W. Drake Scholarship, a University of California graduate scholarship, and a National Science Foundation grant to the Phonology Laboratory, University of California, Berkeley. (VM)

The monograph under review is a study of the acquisition of certain complex linguistic structures by children over the age of five. After a short introduction, Chomsky describes in chapter 2 the linguistic properties of four types of constructions: (1) John is eager to see; John is easy to see; (2) John promised Bill to shovel the driveway; John…