Abstract

Since Clements (1985) introduced feature geometry, four major innovations have been proposed: Unified Feature Theory, Vowel-Place Theory, Strict Locality, and Partial Spreading. We set out the problems that each innovation encounters and propose a new model of feature geometry and feature spreading that is not subject to these problems. Of the four innovations, the new model-Revised Articulator Theory (RAT)-keeps Partial Spreading, but rejects the rest. RAT also introduces a new type of unary feature-one for each articulator-to indicate that the articulator is the designated articulator of the segment.

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