Derived environment effects: A representational approach

Derived environment effects involve either overapplication or underapplication of phonological rules in phonological or morphological environments. This paper focuses on underapplication effects in both phonological and morphological environments, which are treated as resulting from representational differences between derived and non-derived environments at the appropriate level. The Government and Dependency Phonology notions of head and dependent are utilised to this end. Thus, phonologically derived environment effects result from melodic structure that differentiates branching from immediate dominance relations between elements, allowing phonological processes to target a segment of one melodic configuration to the exclusion of another. Morphologically derived environment effects, on the other hand, involve representational differences at the constituent structure level, corresponding to the fact that morphological effects are a result of junctural or morpheme-integrity effects. In the latter case, head-dependent relations are defined as holding over domains, thereby differentiating affixal from non-affixal material, while in the former junctural effects the representational difference is defined at the CV tier, with phonological processes being sensitive to the presence of empty V and C positions.