A Transdisciplinary Framework for SLA in a Multilingual World

THE PHENOMENON OF MULTILINGUALISM is as old as humanity, but multilingualism has been catapulted to a new world order in the 21st century. Social relations, knowledge structures, and webs of power are experienced bymany people as highly mobile and interconnected—for good and for bad—as a result of broad sociopolitical events and global markets. As a consequence, today’s multilingualism is enmeshed in globalization, technologization, and mobility. Communication and meaning-making are often felt as deterritorialized, that is, lived as something “which does not belong to one locality but which organizes translocal trajectories and wider spaces” (Blommaert, 2010, p. 46), while language use and learning are seen as emergent, dynamic, unpredictable, open ended, and intersubjectively negotiated. In this context, increasingly numerous and more diverse populations of adults and youth become multilingual and transcultural later in life, either by elective choice or by forced circumstances, or for a mixture of reasons. They must learn to negotiate complex demands and opportunities for varied, emergent competencies across their languages. Understanding such learning requires the integrative consideration of learners’ mental and neurobiological processing, remembering and categorizing patterns, and momentto-moment use of language in conjunction with a variety of socioemotional, sociocultural, sociopolitical, and ideological factors. The field of second language acquisition (SLA) seeks (a) to understand the processes by which school-aged children, adolescents, and adults learn and use, at any point in life, an additional language, including second, foreign,