Interlanguage

Few works in the field of second language acquisition (SLA) can endure multiple reads, but Selinker's (1972) "Interlanguage" is a clear exception. Written at the inception of the field, this paper delineates a disciplinary scope; asks penetrating questions; advances daring hypotheses; and proposes a first-ever conceptual and empirical framework that continues to stimulate SLA research. Sparked by a heightened interest in this founding text on its 40th anniversary, 10 leaders in their respective