Similarities and differences between speech and writing have been the subject of innumerable studies, but until now there has been no attempt to provide a unified linguistic analysis of the whole range of spoken and written registers in English. In this widely acclaimed empirical study, Douglas Biber uses computational techniques to analyse the linguistic characteristics of twenty three spoken and written genres, enabling identification of the basic, underlying dimensions of variation in English. In Variation Across Speech and Writing, six dimensions of variation are identified through a factor analysis, on the basis of linguistic co-occurence patterns. The resulting model of variation provides for the description of the distinctive linguistic characteristics of any spoken or written text andd emonstrates the ways in which the polarization of speech and writing has been misleading, and thus enables reconciliation of the contradictory conclusions reached in previous research.

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This book describes the most important kinds of texts in English and introduces the methodological techniques used to analyse them. Three analytical approaches are introduced and compared, describing a wide range of texts from the perspectives of register, genre and style. The primary focus of the book is on the analysis of registers. Part 1 introduces an analytical framework for studying registers, genre conventions, and styles. Part 2 provides detailed descriptions of particular text varieties in English, including spoken interpersonal varieties (conversation, university office hours, service encounters), written varieties (newspapers, academic prose, fiction), and emerging electronic varieties (e-mail, internet forums, text messages). Finally, Part 3 introduces advanced analytical approaches using corpora, and discusses theoretical concerns, such as the place of register studies in linguistics, and practical applications of register analysis. Each chapter ends with three types of activities: reflection and review activities, analysis activities, and larger project ideas.

Studies of L2 writing development usually measure T‐units and clausal subordination to assess grammatical complexity, assuming that increased subordination is typical of advanced writing. In this article we challenge this practice by showing that these measures are much more characteristic of conversation than academic writing. The article begins with a critical evaluation of T‐units and clausal subordination as measures of writing development, arguing that they have not proven to be effective discriminators of language proficiency differences. These shortcomings lead to the question of whether these measures actually capture the complexities of professional academic writing, and if not, what alternative measures are better suited? Corpus‐based analyses are undertaken to answer these questions, investigating 28 grammatical features in research articles contrasted with conversation. The results are surprising, showing that most clausal subordination measures are actually more common in conversation than academic writing. In contrast, fundamentally different kinds of grammatical complexity are common in academic writing: complex noun phrase constituents (rather than clause constituents) and complex phrases (rather than clauses). Based on these findings, we hypothesize a sequence of developmental stages for student writing, proposing a radically new approach for the study of complexity in student writing development.

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