A central concern of the cognitive science of language since its origins has been the concept of the linguistic system. Recent approaches to the system concept in language point to the exceedingly complex relations that hold between many kinds of interdependent systems, but it can be difficult to know how to proceed when "everything is…

Syntactic structures are unobserved theoretical constructs which are useful in explaining a wide range of linguistic and psychological phenomena. Language acquisition studies how such latent structures are acquired by human learners through many hypothesized learning mechanisms and apparatuses, which can be genetically endowed or of general…

This article suggests a method to deal with cross-linguistic differences in children with Specific Language Impairment. The differences in vulnerable structures reflect typological properties of the surrounding language (e.g., Leonard 2014a, 2014b). This article adds a developmental perspective to the discussion by interpreting the vulnerable…

Paper delivered at the Institute of Contemporary Arts in London, England, September 20, 1972. (DD)

This book is an introduction to linguistics, written for the beginning student. Among the topics explored are speculations about the origins of language, its nature, how it grows, and how it changes. Other topics include what is essential in the structure of language, the similarities and differences among languages, how the varying patterns of…

This is the first comprehensive study in English of African languages in the context of their cultural setting. It may be used as a basic text in survey courses on African languages as well as a supplemental text in practical language courses. No linguistic background is necessary for understanding this book--the basic concepts are explained,…