In this book H.D. Adamson reviews scholarship in sociolinguistics and second language acquisition, comparing theories of variation in first and second-language speech, with special attention to the psychological underpinnings of variation theory. Interlanguage is what second language learners speak. It contains syntactic, morphological and phonological patterns that are not those of either the first or the second language, and which can be analyzed using the principles and techniques of variation theory. Interlanguage Variation in Theoretical and Pedagogical Perspective: relates the emerging field of variation in second language learners’ speech (interlanguage) to the established field of variation in native speakers’ speech relates the theory of linguistic variation with psycholinguistic models of language processing relates sociolinguistic variation theory to the theory of Cognitive Grammar suggests teaching applications that follow from the theoretical discussion At the forefront of scholarship in the fields of interlanguage and variation theory scholarship, this book is directed to graduate students and researchers in applied English linguistics and second language acquisition, especially those with a background in sociolinguistics.

Recent work in applied linguistics has expanded our understanding of the rule governed nature of language. The concept of an idealized speaker -hearer whose linguistic competence is abstract and separate from reality has been enriched by the notion of an actual interlocutor who possesses communicative compe tence, a knowledge of language which accounts for its use in real-world con texts. Areas of variation previously relegated to idiosyncratic differences in performance have been found to be dynamic yet consistent and lend themselves to study and systematic description. Because language acquisition involves the development of communicative competence, by its very nature it incorporates variation and systematicity. Sec ond-language acquisition is similarly variable, since interlanguage is subject to the same universal and language-specific conventions. In addition, aspects of the second language have been found to be unevenly acquired and are differ entially reflected in particular contexts or settings. Yet, despite our expanding knowledge, this variability is only beginning to be treated in much of the sec ond-language acquisition literature. This volume presents the work of some researchers and methodologists who have taken on the challenge of including variation in their research designs and pedagogical recommendations. Variation is shown to be relevant to lin guistic, social, and psychological aspects of language. It is apparent in the registers and dialects of the target language and in the inter language of learners.

During the acquisition of a second or other language speech and writing are influenced by the native and the "target" language and by the learner's conscious attempts to apply grammatical rules. Elaine Tarone's account offers both theoretical and practical guidance in this crucial area.

This major contribution to second language acquisition theory examines the question of the systematicity of learners' language. Richard Young proposes a new descriptive model for handling what other investigators have claimed to be random variations in performance, and he tests the model on plural inflections in the English interlanguage of Chinese learners. The study investigates how factors such as the social context of speech, the linguistic environment of a variable, and the tendency to omit redundant information affect the developing interlanguage system. The representation of learners' language which emerges from this study is richer, more complex, and more descriptively adequate than has previously been available.

In this book H.D. Adamson reviews scholarship in sociolinguistics and second language acquisition, comparing theories of variation in first and second-language speech, with special attention to the psychological underpinnings of variation theory. Interlanguage is what second language learners speak. It contains syntactic, morphological and phonological patterns that are not those of either the first or the second language, and which can be analyzed using the principles and techniques of variation theory. Interlanguage Variation in Theoretical and Pedagogical Perspective: relates the emerging field of variation in second language learners’ speech (interlanguage) to the established field of variation in native speakers’ speech relates the theory of linguistic variation with psycholinguistic models of language processing relates sociolinguistic variation theory to the theory of Cognitive Grammar suggests teaching applications that follow from the theoretical discussion At the forefront of scholarship in the fields of interlanguage and variation theory scholarship, this book is directed to graduate students and researchers in applied English linguistics and second language acquisition, especially those with a background in sociolinguistics.

This book for the first time reconstructs in a single theoretical framework the more important approaches to linguistic variation found in areas as different as historical linguistics, dialectology, sociolinguistics, psycholinguistics, stylistics, contrastive linguistics, language typology, so-called evaluation grammar, and current Chomskyan generative grammar (generally with an emphasis on syntax). The book concentrates on language-internal variation but also analyses typological research and considers the question of how linguistic descriptions may account for variation both within and between languages. The book's first and primary aim is adequate conceptualization in the area of linguistic variation. Its second aim is a practical one: to contribute, from a theoretical point of view, to the vast descriptive effort that is demanded in linguistics in documenting endangered languages. Its third aim is, simply, orientation. Using a non-Labovian notion of linguistic variable, the author distinguishes a holistic and a component approach to linguistic variation. A precise version of the former is developed by formulating a theory of language varieties based on the concept of variety structure of a language; it is then shown how the proposals made by major representatives of the component approach can be integrated into this framework. The theory is extended to interlanguage variation and applied, in particular, to typology. It is further extended to establish the properties of linguistic descriptions that account for variation in a unified way.

This volume corrects the relative neglect in Second Language Acquisition studies of the quantitative study of language variation and provides insights into such issues as language transfer, acquisition through exposure, language universals, learner's age and so forth. These studies bolster the idea that a full account of SLA development (and, hence, a “theory of SLA”) must be built on not only detailed accounts of interlanguage data but also on a wide appeal to factors which govern the psycholinguistic bases of SLA. An important addition to the volume is a comprehensive guide to both the DOS and Macintosh versions of the VARBRUL statistical program used by variationists.