The visual-manual modality of sign languages renders them a unique test case for language acquisition and processing theories. In this commentary the authors describe evidence from signed languages, and ask whether it is consistent with Ambridge's proposal. The evidence includes recent research on collocations in American Sign Language that reveal…

Describes a model that allows children to control the complexity of the speech they hear within conversations on a moment-to-moment basis. Experimental and observational data clearly delineate the reciprocal nature of how speakers "fine-tune" their speech to listeners. The effects of child-directed speech on language development are discussed.…

An analysis of gender attribution in native and second-language French acquisition shows how learners can develop explicit models of acquisition and explores the nature of the cognitive processes involved in encoding representations of acquired language. (105 references) (Author/CB)

The research discussed here, primarily that of P.J. Gal'perin and his associates at the University of Moscow, is an experimental demonstration of basic tenets of Vygotsky's theory. According to Gal'perin, grammatical knowledge is formed first by teaching the students material grammatical actions; these actions are ultimately to become mental…