I-IV -- Preface Introduction Understanding linguistic innovations On the causes of syntactic change in English Pragmatics and syntactic change Language planning and language change The origin and function of switch reference in Green Hmong Invisible-hand processes and the universal laws of language change On the causes of accelerated linguistic change in the Pacific area Sound change is drawn from a pool of synchronic variation The role of children in linguistic change Contact and isolation in linguistic change Some contact structures in Scandinavian, Dutch, and Raeto-Romansh: inner-linguistic and/or contact causes of language change Index 282-284