This textbook takes a Complex Systems Theory approach to examine individual differences between learners and the potential impact of these variables on the process of acquiring a second language. The authors argue that individual variables cannot provide the complete picture, and that they must instead be understood as part of an interconnected and dynamic system of different factors in order to be useful in a language learning context. Written in an accessible style and suitable for final-year undergraduate and Masters-level students, the book includes clear definitions of key terms, discussion questions for classroom use, practical exercises and activities, and examples of real empirical studies that students and teachers can replicate in their own contexts. This textbook will be of interest to students taking TESOL and SLA courses and modules, as well as those on broader Applied Linguistics programmes.

Variability in predispositions for language learning has attracted scholarly curiosity for over 100 years. Despite major changes in theoretical explanations and foreign/second language teaching paradigms, some patterns of associations between predispositions and learning outcomes seem timelessly robust. This book discusses evidence from a research project investigating individual differences in a wide variety of domains, ranging from language aptitude over general cognitive abilities to motivational and other affective and social constructs. The focus lies on young learners aged 10 to 12, a less frequently investigated age in aptitude research. The data stem from two samples of multilingual learners in German-speaking Switzerland. The target languages are French and English. The chapters of the book offer two complementary perspectives on the topic: On the one hand, cross-sectional investigations of the underlying structure of these individual differences and their association with the target languages are discussed. Drawing on factor analytical and multivariable analyses, the different components are scrutinized with respect to their mutual dependence and their relative impact on target language skills. The analyses also take into account contextual factors such as the learners’ family background and differences across the two contexts investigated. On the other hand, the potential to predict learner’s skills in the target language over time based on the many different indicators is investigated using machine learning algorithms. The results provide new insights into the stability of the individual dispositions, on the impact of contextual variables, and on empirically robust dimensions within the array of variables tested.

Second language learners differ in how successfully they adapt to, and profit from, instruction. This book aims to show that adaptation to L2 instruction, and subsequent L2 learning, is a result of the interaction between learner characteristics and learning contexts. Describing and explaining these interactions is fundamentally important to theories of instructed SLA, and for effective L2 pedagogy. This collection is the first to explore this important issue in contemporary task-based, immersion, and communicative pedagogic settings. In the first section, leading experts in individual differences research describe recent advances in theories of intelligence, L2 aptitude, motivation, anxiety and emotion, and the relationship of native language abilities to L2 learning. In the second section, these theoretical insights are applied to empirical studies of individual differences-treatment interactions in classroom learning, experimental studies of the effects of focus on form and incidental learning, and studies of naturalistic versus instructed SLA.

Understanding the way in which learners differ from one another is of fundamental concern to those involved in second-language acquisition, either as researchers or teachers. This account is the first to review at book length the important research into differences, considering matters such as aptitude, motivation, learner strategies, personality and interaction between learner characteristics and types of instruction.

Individual Differences in Language Ability and Language Behavior is a collection of papers that discusses differences at the center of the study of language, specifically, on the various dimensions of linguistic ability and behavior along which individuals can differ from each other. Papers also review the development of techniques that measure these dimensions in relation to biological, psychological, and cultural parameters. Some papers review individual differences in language study in terms of different perspectives: that of a psychometrician's, of an individualistic's vantage point, and of a psycholinguistic's. Other papers discuss how each individual accesses, uses, and judges his language through fluency, biases, spatial principles, or a linguistic-phonetic mode. Several papers examine individual differences in language acquisition, such as "profile analysis," strategies in acquisition of sounds, second language learning, and duplication of adult language system. A group of papers addresses the biological aspects of language variation. These biological aspects include selective disorders of syntax (agrammatism), selective disorders of lexical retrieval (anomia), and cerebral lateralization effects in language processing. Certain papers explain individual differences in languages using sociolinguistic analysis. The collection is well suited for linguists, ethnologists, psychologists, and researchers whose works involve linguistics, learning, communications, and syntax.

The scope of individual learner differences is broad, yet there is no current, comprehensive, and unified volume that provides an overview of the considerable amount of research conducted on various language learner differences, until now.

Cognitive Individual Differences in Second Language Processing and Acquisition contains 14 chapters that focus on the role of cognitive IDs in L2 learning and processing. The book brings together theoretical and methodological approaches to the study of cognitive IDs, as well as empirical studies that investigate the mediating role of cognitive IDs in various linguistic domains. Chapters include contributions from researchers working within second language acquisition (SLA), psycholinguistics, and cognitive psychology, sharing a common interest in the application of cognitive IDs to their respective areas of study. The interdisciplinary understanding of cognitive IDs presented in this book makes the book of interest to a wide readership of graduate students, faculty members, and academic researchers in the fields of SLA, psycholinguistics, cognitive psychology, and education.

Beginning from the conflict between individual learner differences and the institutionalized, often inflexible character of formal language instruction, Individual Learner Differences in SLA addresses the fact that despite this apparent conflict, ultimate success in learning a language is widespread. Starting with theoretically-based chapters, the book follows the thread of learner differences through sections devoted to learner autonomy; differentiated application of learning strategies; diagnostic studies of experienced learners’ management of the learning process; and reports on phonological attainment and development of language skills. Rather than providing an overview of all individual variables, the book reveals how some of them shape and affect the processes of language acquisition and use in particular settings.

Learner characteristics have been at the center of second language acquisition and foreign language education research in response to the puzzling questions: Why are there often large differences in second language (L2) learning achievement and why do many learners, though proficient first language speakers, not succeed in learning a L2? The papers in this book explore and challenge the three key factors in individual difference research: language aptitude, language learning strategies and motivation.

This edited book brings together ten empirical papers reporting original studies investigating different facets of individual variation second language learning and teaching. The individual difference factors covered include, among others, motivation, self, anxiety, emotions, willingness to communicate, beliefs, age, and language learning strategies. What is especially important, some of the contributions to the volume offer insights into intricate interplays of these factors while others attempt to relate them to learning specific target language subsystems or concrete instructional options. All the chapters also include tangible implications for language pedagogy. The book is of interest to both researchers examining the role of individual variation in second language learning and teaching, teacher trainers, graduate and doctoral students in foreign languages departments, as well as practitioners wishing to enhance the effectiveness of second language instruction in their classrooms.