We address in this talk a reverse weak Person-Case Constraint (PCC) effect observed in object marking in Washo (Hokan/isolate, USA), in which the verb always marks the person of the subject, while object marking is more complex. More specifically, overt objects are never marked, and marking of covert objects is obligatory where possible, which is only with certain subject-object feature combinations: While participant (1st/2nd person) objects are marked regardless of the person of the subject, 3rd person object marking is only allowed if the subject is also 3rd person. This is the “reverse” (Stegovec 2020) of the weak version of the PCC (e.g. in Catalan), in which a 3rd person indirect object clitic is blocked in the presence of a lower participant direct object clitic while other combinations are allowed. We draw a comparison with Aleut, in which covert objects also trigger verbal marking, and the combined expression of subject and object marking is also constrained by PCC effects, which, unlike in Washo, are strong and not reverse (Boyle 2000, Merchant 2011, Woolford 2018). We argue for an analysis of the facts in both languages that employs syntactic Agree-based mechanisms normally used in deriving PCC effects. [Different from the submitted abstract, we will analyze the pattern with Deal's (2015, 2020) interaction/satisfaction framework for Agree, with one result being that we no longer need movement of the object over the subject.]
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