The thesis examines the reduplicative patterns of Lushootseed (Central Salish), arguing that the range of patterns are best explained by Generalized Template Theory (McCarthy and Prince 1994), in which reduplicative morphemes are specified for morphological category. Each reduplicative morpheme is specified as either root or affix, and exhibits canonical properties such as shape and segmental content. Constraints interact to derive the 'emergent' templates. In each case the root is more marked than the affix reduplicant. Generalized Template Theory is argued to have greater explanatory power than prosodic templates because both shape and segmental content can be related to morphological class membership (whereas prosodic templates can only refer to shape).