In this paper it is argued that despite being an apparently disparate range of empirical facts and having received deferent analytical treatments, Subject-verb agreement, Clitic-doubling, and Negative Concord are all forms of agreement. It is shown that just as Subject extraction alters agreement and yields Anti-Agreement Effects in Berber, Object extraction bars the occurrence of clitics, i.e., bars clitic-doubling, and NPI extraction affects Negative Concord. These effects are not coincidental and provide, under proper analysis, further empirical evidence of unification under Agree which, to the extent that it is a computationally efficient operation, holds for any form of agreement. When this operation is inhibited, the suppression effects are uniformly displayed across all the domains within which it applies.
Proceedings of the 25th West Coast Conference on Formal Linguistics
edited by Donald Baumer, David Montero, and Michael Scanlon
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