We examined the effects of intensive tact instruction on emission of audience-accurate verbalizations of 2 middle school students using a delayed multiple baseline design across participants. Dependent variables were accurate and inaccurate audience controlled tacts and conversational units during non-instructional times. Following baselines,…

This report describes an investigation of the acquisition by children of a symbolic system, specifically English nomenclature--that set of nouns that serves the function of naming, denoting, or referring to objects. The five studies involve nine experiments dealing with one or another of the aspects of this problem. Two questions guided these…

This article concludes that language mixes do not constitute a major interference in the acquisition of bilingualism since children appear to be able to differentiate their two linguistic systems from an early age. (Author/NCR)

Whereas former research on academic discourse has paid a great deal of attention to writing and its hedging strategies, this paper aims to show that a complementary and equally important feature of academic spoken discourse is the use of modal certainty. An examination of modal selections in two American Dissertation Defenses additionally reveals…

This paper explores the relation between the communicative and categorical functions of language and the acquisition of language production. Three major factors in language acquisition are communication, ability for representation and the process of categorization. This paper offers evidence that a sudden and dramatic increase in lexical skill…