What counts as (contact-induced) change

We are most grateful to our commentators for their careful reading of our Keynote Article (henceforth KA) and their incisive observations on contact-induced change, and for the many challenging and thought-provoking issues they raise. We welcome the opportunity to respond to (some of) them, especially since, perhaps not surprisingly, these are symptomatic of the very issues in the field of contact linguistics that prompted us to write this KA in the first place.