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.

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.

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.

This book focuses on the effects of L1 cognitive resources on L2 reading e.g. the effects of L1 reading ability, the ability in L1 mental-structure building, L1 cognitive use in L2 reading, and other related cognitive mechanisms and capacities of EFL learners in China. It integrated test-based and product-oriented as well as VPA-based (verbal protocol analysis) and process-oriented experiments to address the problems of reading in a second language. This book provides several theoretical, methodological and pedagogical insights, including the multidimensional nature of L2 reading and Vygotskyan sociocultural theory as a suitable L2 reading framework, combined approaches on L2 studies, and the rewarding active use of L1 cognitive resources in L2 learning.

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.

This book, written for both seasoned and novice researchers, presents a theory of what is called Basic and Higher Language Cognition (BLC and HLC), a theory aimed at making some fundamental issues concerning first and second language learning and bilingualism (more) empirical. The first part of the book provides background for and explication of the theory as well as an agenda for future research, while the second part reports on selected studies of language proficiency in native speakers, as well as non-native speakers, and studies of the relationship between literacy in a first and second language. Conceptual and methodological problems in measuring language proficiency in research on second language acquisition and bilingualism are also discussed. Further, the notion of levels of language proficiency, as rendered by the Common European Framework of Reference for Languages (CEFR), is critically examined, suggesting ways of empirically investigating a number of questions that the CEFR raises but is not capable of answering.

This volume bridges the gap between the rapidly advancing fields of Learner Corpus Research and Second Language Acquisition.

Language researchers and practitioners often adopt tools and techniques without testing whether they really work as they should. This is understandable because most scholars do not have the time or expertise to properly evaluate the usefulness of all instruments, measures, and methods they need. It is therefore critical to have problem solvers in the field who gain the necessary expertise and take the time to scrutinize existing methods, identify problems, and offer new solutions. This volume represents the work of scholars who have done this; it is a collection of the latest advances, developments, and innovations regarding the modeling and measurement of learners’ vocabulary growth curves, current levels of vocabulary knowledge and lexical proficiency, and the patterns of lexical diversity found in their language production. Several of the contributors also address the complex but important relationship between automated indices and human judgments of learners’ lexical patterns and abilities.

The implicit/ explicit distinction is central to our understanding of the nature of L2 acquisition. This book begins with an account of how this distinction applies to L2 learning, knowledge and instruction. It then reports a series of studies describing the development of a battery of tests providing relatively discrete measurements of L2 explicit/ implicit knowledge. These tests were then utilized to examine a number of key issues in SLA - the learning difficulty of different grammatical structures, the role of L2 implicit/ explicit knowledge in language proficiency, the relationship between learning experiences and learners’ language knowledge profiles, the metalinguistic knowledge of teacher trainees and the effects of different types of form-focused instruction on L2 acquisition. The book concludes with a consideration of how the tests can be further developed and applied in the study of L2 acquisition.