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This paper examines how L1 Korean-speaking learners of English process three types of control constructions in English: Subject, Object, and Adjunct control. Using a speeded grammaticality judgment task, this study evaluates their ability to accept grammatical sentences and reject ungrammatical ones, thereby testing their understanding of PRO's interpretational restrictions. Thirty native Korean-speaking adults participated, revealing a significant effect of grammaticality on performance: participants generally handled grammatical sentences well but encountered considerable difficulties with ungrammatical sentences. These findings suggest L2 learners' challenges in ruling out illicit interpretations of PRO across control constructions, implying an incomplete acquisition of the referential properties of PRO. Additionally, response times were significantly slower for subject control, indicating increased processing demands, which potentially hints at intervention effects.
Jinsun Choe (Fri,) studied this question.