The phenomenon of grammaticalization--the historical process whereby new grammatical material is created--has attracted a great deal of attention within linguistics in recent years. This book shows how this approach leads to a number of important conceptual and theoretical issues concerning the nature of functional categories and the form of parameters, as well as the relation of both of these to language change.

The phenomenon of grammaticalization--the historical process whereby new grammatical material is created--has attracted a great deal of attention within linguistics in recent years. This book shows how this approach leads to a number of important conceptual and theoretical issues concerning the nature of functional categories and the form of parameters, as well as the relation of both of these to language change.