This volume focuses on two main topics: comparative morphology (i.e. cross-linguistic analysis, including typology, dialectology and diachrony) and psycholinguistics (i.e. on-line processing, off-line experiments, child language). Since the psycholinguistic papers of this volume consistently refer to issues of grammatical theory and many of the contributions on morphological theory consider psycholinguistic questions, the topics are interconnected. Both inflectional and derivational morphology are dealt with. The volume spans a broad set of languages of the world, such as African, Amerindian, Arabic and Chukotko-Kamchatkan, in addition to the Indo-European languages. This volume differs from the other collective volumes on morphology both by the breadth of topics and by great integration of theoretical and methodological perspectives.