This volume brings together concrete ideas on identifying and measuring second language (L2) proficiency from different branches of SLA. The chapters introduce a range of tools for the evaluation of learners' language level with respect to both productive and receptive skills and provide a variety of answers to the question of how to assess L2 proficiency in a valid, reliable and practical manner.

The creation of the Common European Framework of Reference for Languages (CEFR) has given rise to interest and debate among policy makers, testers, teachers and researchers alike in the reliability and feasibility of the assessment of second language (L2) proficiency. This volume brings together concrete ideas on identifying and measuring L2 proficiency from different branches of SLA research (psycholinguistic, sociolinguistic, corpus-based, applied linguistics) to contribute to a deeper understanding of what it means to be proficient in an L2. The chapters introduce a wide range of tools that are innovative, reliable, and easy-to-use for the evaluation of learners’ language level with respect to both productive and receptive skills and provide a variety of answers to the question of how to assess L2 proficiency in a valid, reliable and practical manner. The collection will therefore inspire language teachers, teacher trainers and language testing specialists and help them adapt their assessment practices when necessary, and will also be a valuable resource for postgraduate students and researchers.

Research into complexity, accuracy and fluency (CAF) as basic dimensions of second language performance, proficiency and development has received increased attention in SLA. However, the larger picture in this field of research is often obscured by the breadth of scope, multiple objectives and lack of clarity as to how complexity, accuracy and fluency should be defined, operationalized and measured. The present volume showcases current research on CAF by bringing together eleven contributions from renowned international researchers in the field. These contributions not only add to the body of empirical knowledge about L2 use and L2 development by bringing new research findings to light but they also address fundamental theoretical and methodological issues by responding to questions about the nature, manifestation, development and assessment of CAF as multifaceted constructs. Collectively, the chapters in this book illustrate the converging and sometimes diverging approaches that different disciplines bring to CAF research.

With contributions from an international team of leading experts, this volume offers new ways to explore and measure language dominance.

This comprehensive account of performance-based assessment of L2 lexical proficiency analyzes and compares two of the primary methods of evaluation used in the field and unpacks the ways in which they tap into different dimensions of one model of lexical competence and proficiency. This book builds on the latest research on performance-based assessment, which has most recently pointed to the application of more quantitative measures to L2 data, to systematically explore the qualitative method of using human raters in assessment exercises and the quantitative method of using automatic computation of statistical measures of lexis and phraseology. Supported by an up-to-date review of the existing literature, both approaches’ unique features are highlighted but also compared to one another to provide a holistic overview of performance-based assessment as it stands today at both the theoretical and empirical level. These findings are exemplified in a concluding chapter, which summarizes results from an empirical study looking at a range of lexical and phraseological features and human raters’ scores of over 150 essays written by both L2 learners of English and native speakers. Taken together, the volume challenges existing tendencies within the field which attempt to use one method to validate one another by demonstrating their capacity to indicate very different elements of lexical proficiency, thereby offering a means by which to better conceptualize performance-based assessment of L2 vocabulary in the future. This book will be of interest to students and researchers working in second language acquisition and applied linguistics research, particularly those interested in issues around assessment, vocabulary acquisition, and language proficiency.

Benati provides clarity about the characteristics and notion of language proficiency in the field of second language acquisition. He looks at four areas of research paradigmatically related to the role of proficiency: theorizing and measuring second language proficiency; the dimensions of L2 proficiency; factors contributing to the attainment of L2 proficiency and attaining L2 proficiency in the classroom. It also contains a variety of research accounts about the specific factors which have an effect on proficiency together with a theorised measurement of proficiency in second language research. It will be required reading for researchers in applied linguistics and second language acquisition.

Measuring Second Language Vocabulary Acquisition provides an examination of the background to testing vocabulary knowledge in a second language and in particular considers the effect that word frequency and lexical coverage have on learning and communication in a foreign language. It examines the tools we have for assessing the various facets of vocabulary knowledge such as aural and written word recognition, the link with word meaning, and vocabulary depth. These are illustrated and the scores they produce are demonstrated to provide normative data. Vocabulary acquisition from course books and in the classroom in examined, as is vocabulary uptake from informal tasks. This book ties scores on tests of vocabulary breadth to performance on standard foreign language examinations and on hierarchies of communicative performance such as the CEFR.