The volume advances our understanding of the role of scales and hierarchies across the linguistic sciences. Although scales and hierarchies are widely assumed to play a role in the modelling of linguistic phenomena, their status remains controversial, and it is these controversies that the present volume tackles head-on.

I. Bornkessel-Schlesewsky, University of South Australia; A. Malchukov, University of Mainz; M. Richards, Queen's University Belfast.