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Work Papers of the Summer Institute of Linguistics, University of North Dakota Session

DOI

10.31356/silwp.vol41.07

Abstract

Commonly occurring linguistic forms, including allomorphs, tend to be learned (listed in speakers' mental lexicons) even if they are formed according to the pattern of a linguistic rule. They thus have dual motivation: the motivation given by the rule, and the suppletive motivation of their having been learned. This accounts for the otherwise inexplicable persistence of rule-governed allomorphy when the conditioning environment is destroyed through diachronic change, producing apparent positive exceptions to the rule.

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