Is a theory of applied linguistics desirable? And if so, is it possible? My new book, Responsible design in applied linguistics: theory and practice (2017; Springer) proceeds from the thesis that applied linguistics needs a theoretical foundation. It is indeed possible to delineate its work (and specifically distinguish it from linguistics). Providing it with a theoretical foundation might additionally yield new insight into the principles that underlie applied linguistic designs. Those designs we encounter as the interventions that we call language courses, language tests and language policies. Continue reading →