Introduction: parameters and morphosyntactic change Ans van Kemenade and Nigel Vincent; Part I. Aspect, Argument Structure and Case Selection: 1. The interdependence of case, aspect and referentiality in the history of German Werner Abraham; 2. The rise of the article in the Germanic languages Julia Philippi; 3. The diachronic development of a modal verb of necessity Paola BenincÀ and Cecilia Poletto; 4. Auxiliary verbs in Old and Middle French Philip H. Miller; 5. Commentary on part I: aspect, argument structure and case selection Alessandra Tomaselli; Part II. Clitics: 6. The emergence of the D-system in Romance Nigel Vincent; 7. On two locations for complement clitic pronouns Maria Luisa Rivero; 8. On the integration of second position phenomena Josep M. Fontana; Part III. Verb Second and Comp: 9. Shifting triggers and diachronic reanalyses David Lightfoot; 10. Viewing change in progress Alison Henry; 11. Verb movement in Old and Middle English Anthony Kroch and Ann Taylor; 12. V2 and embedded topicalization in Old and Middle English Ans van Kemenade; 13. Qu'est-ce que ce que: the diachronic evolution of a French complementizer Laurie Zaring and Paul Hirschbühler; 14. The structure of parametric change, and V-movement in the history of English Anthony Warner; Part IV. Scrambling and Morphological Change: 15. Directionality and word order change in the history of English Ian Roberts; 16. On the relation between morphological and syntactic case Fred Weerman; 17. The rise of positional licensing Paul Kiparsky; The papers by Kiparsky, Roberts and Weerman: an epilogue Höskuldur Thrainsson; References; Index.