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"This handbook provides an essential resource for all those interested in the role of individual differences in second language acquisition and pedagogy. With an emphasis on cutting-edge theory and research, it offers a comprehensive discussion of current issues and developments in this key area of SLA. The book is laudable for its depth of analysis and breadth of topics covered."

Hossein Nassaji, University of Victoria, Canada​

"This handbook is a treasure trove of information and inspiration. It does a remarkable job of covering all classic topics masterfully and offering truly innovative insights into individual differences in language learning that will move the field forward. A must-own resource for SLA researchers and language teachers alike!"

Lourdes Ortega, Georgetown University, USA

"Recent advances in science and technology have renewed researchers’ interest in the crucial roles individual difference factors play in second language acquisition. This brand-new handbook provides the most comprehensive and up-to-date state-of-the-science overview of the field, and its impact on second language acquisition as an interdisciplinary area of inquiry will be felt for a very long time to come."

Li Wei, UCL Institute of Education, University College London, UK

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