This book presents new insights on the phonology-morphology interface. It discusses a wide range of central theoretical issues, including the role of paradigms in synchronic grammars, and does so in the context of a wide variety of languages including several non-Indo-European languages. Paradigm uniformity has a long tradition in pre-generative linguistics but until recently played a minor role in theoretical phonology. Optimality Theory has drawn renewed attention to paradigmatic effects, formalized by constraints comparing the surface pronunciation of morphologically related words. The ten chapters in this volume illustrate how a wide range of exceptions to regular phonological processes can be explained in this fashion. The chapters address such important theoretical questions as: do paradigms have a morphological base? If so, how is it defined? Why do paradigmatic effects hold for only certain subsets of words? In which areas of the grammar are paradigmatic effects likely to be found? The authors discuss new data from the synchronic grammars of a wide variety of unrelated languages, including: Modern Hebrew, Chimwiini and Jita (Bantu), Halkomelem (Salish), Hungarian, and Arabic.