Second Language Sentence Processing

Second language (L2) sentence processing research studies how adult L2 learners understand sentences in real time. I review how L2 sentence processing differs from monolingual first-language (L1) processing and outline major findings and approaches. Three interacting factors appear to mandate L1–L2 differences: ( a) capacity restrictions in the ability to integrate information in an L2; ( b) L1–L2 differences in the weighting of cues, the timing of their application, and the efficiency of their retrieval; and ( c) variation in the utility functions of predictive processing. Against this backdrop, I outline a novel paradigm of interlanguage processing, which examines bilingual features of L2 processing, such as bilingual language systems, nonselective access to all grammars, and processing to learn an L2. Interlanguage processing goes beyond the traditional framing of L2 sentence processing as an incomplete form of monolingual processing and reconnects the field with current approaches to grammar acquisition and the bilingual mental lexicon.