The nature of grammatical categories has long been a subject of dispute for theorists of language development, just as the nature of concepts has long been a concern for theorists of cognitive development. 16 children were examined in the present study to determine their knowledge of placement privileges of auxiliary verb forms in yes-no questions. The purpose was to specify the grammatical category (if any) the auxiliary verb forms constituted early in development. Results suggest that the category of concern is a peculiar mixture of general and specific knowledge. Implications for theories of language and cognitive development are considered. (21 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved).
- knowledge of placement privileges of auxiliary verbs in yes-no questions, 2.4-5.5 yr olds