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Agreement errors and structural distance: A corpus study of Bulgarian

In this work we address the phenomenon of substitution of the special “count form” suffix of masculine non-person nouns in Bulgarian numeral phrases for a simple plural morpheme. This substitution phenomenon is observed in everyday speech and writing and is noted by traditional Bulgarian grammarians. We propose to treat this phenomenon on a par with agreement errors previously investigated in the language production literature on English (e.g. “The editor of the books are...”) and on the Romance languages. We conducted a corpus study of agreement substitution errors in Bulgarian, the results of which support the psycholinguistic theories maintaining, in particular, that structural hierarchy is relevant for the computation of agreement in language production.