ABSTRACT
The theoretical foundations of the chapter revolve around the constructs of representation and processing and the consensus notion that the two languages of bilinguals involve parallel activation even when speaking in a single language. We highlight the models of lexical representation of Kroll and Green’s on inhibition and control and his more recent Control Process Model to account for different kinds of codeswitching. The theoretical section ends with a presentation of Walters’ model of bilingual production, which accounts for both psycholinguistic and sociopragmatic information in a single framework. Against this background, we review our own work on Bilingual Developmental Language Disorder and bilingualism in Schizophrenia with a particular focus on verbal morphosyntax, prepositions, syntactic narrative abilities, and two markers unique to bilingualism, codeswitching and code interference. The chapter concludes with a detailed methodological section on assessment and research methods.
