Offering a comprehensive state-of-the-art overview, Michael T. Putnam and David Natvig define key concepts and the contemporary debates in the field, discussing a variety of structural/grammatical, societal, and psychological/cognitive aspects of this phenomenon and their implications for linguistic theory and language learning.
Setting the future research agenda on this subject and with helpful features like discussion questions, this will be an invaluable resource for advanced students and researchers of theoretical & applied linguistics, bilingualism & heritage linguistics, psycholinguistics, sociolinguistics, education, and beyond.
Michael T. Putnam is Professor of German and Linguistics at Penn State University and currently serves as the Director of the Linguistics Program.
David Natvig is Associate Professor of Nordic Linguistics at the University of Stavanger.