Vocabulary richness, including lexical diversity and use of rare words, has an important role in assessing proficiency, diagnosing progress and testing theory in the study of language development. This book reviews different methods for quantifying how vocabulary is deployed in spontaneous speech and writing, before introducing an alternative approach which can assess overall lexical diversity, measure morphology development and compare the development of different word classes. The new approach is illustrated by its application to first and second language learners.

The Bloomsbury Companion to Second Language Acquisition is designed to be the essential one-volume resource for advanced students and academics. It offers a comprehensive reference resource: it features an overview of key topics in SLA as well the key research methods. It then goes on to look at current research areas and new directions in the field by examining key relationships in the field, including the relationship between first and second language acquisition and the relationship between L2 input and L2 output. It is a complete resource for postgraduate students and researchers working within second language acquisition and applied linguistics.

This Handbook, with 45 chapters written by the world’s leading scholars in second language acquisition (SLA) and language testing, dives into the important interface between SLA and language testing: shared ground where researchers seek to measure second language performance to better understand how people learn their second languages. The Handbook also reviews how to best measure and evaluate the second language (L2) learners’ personal characteristics, backgrounds, and learning contexts to better understand their L2 learning trajectories. Taking a transdisciplinary approach to research, the book builds upon recent theorizing and measurement principles from the fields of applied linguistics, cognitive science, psychology, psycholinguistics, psychometrics, educational measurement, and social psychology. The Handbook is divided into six key sections: (1) Assessment concepts for SLA researchers, (2) Building instruments for SLA research, (3) Measuring individual differences, (4) Measuring language development, (5) Testing specific populations, and (6) Measurement principles for SLA researchers.

Currents in Language Learning provides programmatic state-of-the-art overviews of current issues in the language sciences and their applications in first, second, and bi/multilingual language acquisition in naturalistic and tutored contexts. Draws on interdisciplinary perspectives from linguistics, psychology, education, anthropology, sociology, cognitive science, and neuroscience Brings together a team of leading linguists to explore current issues Develops research agendas in areas including: progress and relevance in second language acquisition; usage-based linguistics; age effects in language learning; second language pragmatics; vocabulary knowledge; transfer of learning in second language instruction; language, literacy, and culture; academic language development in schools; practice theory; and evolutionary perspectives on language

This book introduces an innovative collection of easy-to-use computer programs that have been developed to measure and model vocabulary knowledge. The book aims to help researchers discover new instruments for lexical analysis, and provides a theoretical framework in which studies with such tools could be conducted. Each of the programs comes with a short manual explaining how to use the program, an example of a published paper that uses the program and a set of questions that readers can develop into proper projects. The programs can be used in real research projects and have the potential to break new ground for research in L2 vocabulary acquisition. The book will be of great use to final year undergraduates and masters students in applied linguistics, second language acquisition, psycholinguistics and language testing and to PhD students doing research methods courses.

The Routledge Handbook of Second Language Acquisition and Corpora is a state-of-the-art collection of cutting-edge scholarship at the intersection of second language acquisition and learner corpus research. It draws on data-driven, statistical analysis to outline the background, methods, and outcomes of language learning, with a range of global experts providing detailed guidelines and findings. The volume is organized into five sections: Methodological and theoretical contributions to the study of learner language using corpora – setting the scene Key aspects in corpus design, annotation, and analysis for SLA Corpora in SLA theory and practice SLA constructs and corpora Future directions This is a ground-breaking collection of essays offering incisive and essential reading for anyone with an interest in second language acquisition, learner corpus research, and applied linguistics.

International scholars and researchers present cutting edge contributions on the significance of vocabulary in current thinking on first and second language acquisition in the school and at home. By pursuing common themes across first and second language and bilingual contexts, the editors offer a collection that tackles the most important issues.

The Blackwell Handbook of Language Development provides a comprehensive treatment of the major topics and current concerns in the field; exploring the progress of 21st century research, its precursors, and promising research topics for the future. Provides comprehensive treatments of the major topics and current concerns in the field of language development Explores foundational and theoretical approaches Focuses on the 21st century's research into the areas of brain development, computational skills, bilingualism, education, and cross-cultural comparison Looks at language development in infancy through early childhood, as well as atypical development Considers the past work, present research, and promising topics for the future. Broad coverage makes this an excellent resource for graduate students in a variety of disciplines

This book examines the various ways in which age affects the process and the product of foreign language learning in a school setting. It presents studies that cover a wide range of topics, from phonetics to learning strategies. It will be of interest to students and researchers working in SLA research, language planning and language teaching.