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The claim that multilanguage acquisition drives advantages in ‘executive function’ is currently an issue of vigorous debate in academic literature. Critics argue that evidence for this advantage has been confounded by unsound or questionable methodological practices, with some investigators abandoning research in this area altogether, indicating either that there is no bilingual advantage or that it is impossible to capture and therefore rule out alternative explanations for group differences. Over the past decade, and against this backdrop, theory has developed from a relatively narrow focus on inhibitory control to incorporate theory of mind, rule-based learning, reactive and proactive control, visuo-spatial memory, and control of verbal interference in speech comprehension. Most recently, authors have claimed that the process of becoming bilingual may also impact on metacognitive abilities. The fundamental issue is whether the limited capacity and goal-directed selectivity of our executive system can somehow be enhanced or otherwise profit from the continuous, intense competition associated with communicating in multilingual environments. However, although this issue has received much attention in academic literature, the question of which cognitive mechanisms are most influenced by the enhanced competition associated with multilingual contexts remains unresolved. Therefore, rather than dismissing this important topic, we advocate a more systematic approach in which the effects of multilinguistic experience are assessed and interpreted across well-defined stages of cognitive development. We encourage a broad, developmentally informed approach to plotting the trajectory of interactions between multi-language learning and cognitive development, using a convergence of neuroimaging and behavioral methods, across the whole lifespan. Moreover, we suggest that the current theoretical framing of the bilingual advantage is simplistic, and this issue may limit attempts to identify specific mechanisms most likely to be modulated by multilingual experience. For example, there is a tendency in academic literature to treat ‘executive function’ as an essentially unitary fronto-parietal system recruited in response to all manner of cognitive demand, yet performance across so called ‘executive function’ tasks is highly variable and intercorrelations are sometimes low. It may be the case that some ‘higher level’ mechanisms of 'executive function' remain relatively unaffected, while others are more sensitive to multilingual experience – and that there may be disadvantages as well as advantages, which themselves may be sensitive to factors such as age. In our view, there is an urgent need to take a more fine-grained approach to this issue, so that the strength and direction of changes in diverse cognitive abilities associated with multilanguage acquisition can be better understood. This book compiles work from psychologists and neuroscientists who actively research whether, how, and the extent to which multilanguage acquisition promotes enhanced cognition or protects against age-related cognitive or neurological deterioration. We hope this collection encourages future efforts to drive theoretical progress well beyond the highly simplistic issue of whether the bilingual cognitive advantage is real or spurious.
Bilingualism is a ubiquitous global phenomenon. Beyond being a language experience, bilingualism also entails a social experience, and it interacts with development and learning, with cognitive and neural consequences across the lifespan. The authors of this volume are world renowned experts across several subdisciplines including linguistics, developmental psychology, and cognitive neuroscience. They bring to light bilingualism’s cognitive, developmental, and neural consequences in children, young adults, and older adults. This book honors Ellen Bialystok, and highlights her profound impact on the field of bilingualism research as a lifelong experience. The chapters are organized into four sections: The first section explores the complexity of the bilingual experience beyond the common characterization of “speaking multiple languages.” The next section showcases Ellen Bialystok’s earlier impact on psychology and education; here the contributors answer the question “how does being bilingual shape children’s development?” The third section explores cognitive and neuroscientific theories describing how language experience modulates cognition, behavior, and brain structures and functions. The final section shifts the focus to the impact of bilingualism on healthy and abnormal aging and asks whether being bilingual can stave off the effects of dementia by conferring a “cognitive reserve.”
The study of bilingualism has charted a dramatically new, important, and exciting course in the 21st century, benefiting from the integration in cognitive science of theoretical linguistics, psycholinguistics, and cognitive psychology (especially work on the higher-level cognitive processes often called executive function or executive control). Current research, as exemplified in this book, advances the study of the effects of bilingualism on executive function by identifying many different ways of being bilingual, exploring the multiple facets of executive function, and developing and analyzing tasks that measure executive function. The papers in this volume (21 chapters), by leading researchers in bilingualism and cognition, investigate the mechanisms underlying the effects (or lack thereof) of bilingualism on cognition in children, adults, and the elderly. They take us beyond the standard, classical, black-and-white approach to the interplay between bilingualism and cognition by presenting new methods, new findings, and new interpretations.
This collection brings together leading names in the field of bilingualism research to celebrate the 25th anniversary of the Studies in Bilingualism series. Over the last 25 years the study of bilingualism has received a tremendous amount of attention from linguists, psychologists, cognitive scientists, and neuroscientists. The breadth of coverage in this volume is a testament to the many different aspects of bilingualism that continue to generate phenomenal interest in the scholarly community. The bilingual experience is captured through a multifaceted prism that includes aspects of language and literacy development in child bilinguals with and without developmental language disorders, language processing and mental representations in adult bilinguals across the lifespan, and the cognitive and neurological basis of bilingualism. Different theoretical approaches – from generative UG-based models to constructivist usage-based models – are brought to bear on the nature of bilingual linguistic knowledge. The end result is a compendium of the state-of-the-art of a field that is in constant evolution and that is on an upward trajectory of discovery.
This book pioneers the study of bilingualism across the lifespan and in all its diverse forms. In framing the newest research within a lifespan perspective, the editors highlight the importance of considering an individual's age in researching how bilingualism affects language acquisition and cognitive development. A key theme is the variability among bilinguals, which may be due to a host of individual and sociocultural factors, including the degree to which bilingualism is valued within a particular context.Thus, this book is a call for language researchers, psychologists, and educators to pursue a better understanding of bilingualism in our increasingly global society.
Research on bilingual language processing reveals an important role for control processes that enable bilinguals to negotiate the potential competition across their two languages. The requirement for control that enables bilinguals to speak the intended language and to switch between languages has also been suggested to confer a set of cognitive consequences for executive function that extend beyond language to domain general cognitive skills. Many recent studies have examined aspects of how cognitive control is manifest during bilingual language processing, how individual differences in cognitive resources influence second language learning and performance, and the range of cognitive tasks that appear to be influenced by bilingualism. However, not all studies demonstrate a bilingual advantage in all tasks that tap into cognitive control. Indeed, many questions are unanswered that are critical to our understanding of bilingual control: What aspects of cognitive control are enhanced for proficient bilinguals? How are individual differences in cognitive control related to language acquisition, proficiency, or professional translation skill? How does the language environment affect concurrent processing? How exactly does language control come about in tasks such as speech production, switching between languages, or translation? When and how does inhibitory processing support language control? The focus of this Research Topic is on executive control and bilingualism. The goal is to have a broad scope that includes all of these issues. We seek empirical contributions using different methodologies including behavioral, computational and neuroscience approaches. We also welcome theoretical contributions that provide detailed discussion of models or mechanisms that account for the relationship between bilingualism and cognitive control. We aim to provide a platform for new contributions that represent a state-of-the art overview of approaches to cognitive control in bilingualism. We hope that this Research Topic will enable the field to formulate more precise hypotheses and causal models on the relation between individual differences, cognitive control and bilingual language processing.
Bilingualism Across the Lifespan explores the opportunities and challenges that are inherent in conducting cognitive research in an increasingly global and multilingual society. Divided into three sections, the book highlights the multifaceted and complex nature of bilingualism. The first section focuses on what every cognitive psychologist ought to know about bilingualism: the impact of bilingualism on cognition across the lifespan, the idea that bilinguals are not a special case, and the importance of bilingualism in cognitive research beyond language. The second section focuses on challenges inherent in bilingual research: diversity of bilingual experience, the assessment of proficiency, and finding matched comparison groups and materials. Finally, the book considers opportunities that are created when bilingualism is incorporated into the cognitive research enterprise. It illustrates how researchers of bilingualism leverage theory, methodology, and findings from single-language research, incorporate uniquely bilingual processes or representations, and target populations of bilinguals that help to establish universal properties. Bringing together leading international contributors, the book provides the reader with a better understanding of the nature of bilingualism and bilingual research as it relates to human cognition. It will be an essential read for all researchers and upper-level students of bilingualism and cognitive psychology more generally.
The number of bilingual and multilingual speakers around the world is steadily growing, leading to the questions: How do bilinguals manage two or more language systems in their daily interactions, and how does being bilingual/multilingual affect brain functioning and vice versa? Previous research has shown that cognitive control plays a key role in bilingual language management. This hypothesis is further supported by the fact that foreign languages have been found to affect not only the expected linguistic domains, but surprisingly, other non-linguistic domains such as cognitive control, attention, inhibition, and working memory. Somehow, learning languages seems to affect executive/brain functioning. In the literature, this is referred to as the bilingual advantage, meaning that people who learn two or more languages seem to outperform monolinguals in executive functioning skills. In this Special Issue, we first present studies that investigate the bilingual advantage. We also go one step further, by focusing on factors that modulate the effect of bilingualism on cognitive control. In the second, smaller part of our Special Issue, we focus on the cognitive reserve hypothesis with the aim of addressing the following questions: Does the daily use of two or more languages protect the aging individual against cognitive decline? Does lifelong bilingualism protect against brain diseases, such as dementia, later in life?
Bilingualism Across the Lifespan examines the dynamics of bilingual language processing over time from the perspectives of neurolinguistics, psycholinguistics and sociolinguistics. This multidisciplinary approach is fundamental to an understanding of how the bilingual's two (or more) language systems interact with each other and with other higher cognitive systems, neurological substrates, and social systems - a central theme of this volume. Contributors examine the nature of bilingualism during various phases of the lifecycle - childhood, adulthood, and old age - and in various health/pathology conditions. Topics range from code separation in the young bilingual child, across various types of language pathologies in adult bilinguals, to language choice problems in dementia. The volume thus offers a broad overview of current theoretical and empirical approaches to the study of bilingualism. It will interest and stimulate researchers and graduate students in the fields of linguistics, neuropsychology, and developmental psychology, as well as in foreign language teaching, speech pathology, educational psychology, and special education.
