Abstract
How interpreting training may enhance semantic integration in general language processing (instead of language processing during interpreting) was not clear, and its neural correlates remained unexplored. Two groups of university students with different amounts of interpreting training experience (more-IE and less-IE) performed a second language (L2) reading task, in which the target sentence ended with three types of lateralized words: expected words, words of related semantic violation (related violation), and words of unrelated semantic violation (unrelated violation). N400 responses elicited by the final words were used to index semantic integration. Two major findings suggested potential contributions of interpreting training to L2 semantic integration. First, the more-IE group exhibited smaller N400 amplitudes than the less-IE group for expected words, and no group differences were obtained for the two violations. Second, N400 amplitudes for related violations were generally smaller than those for unrelated violations in the right visual field, and this difference was more fully captured (more broadly distributed over the scalp) in the more-IE group than in the less-IE group. Therefore, smaller N400 amplitudes for expected words but not for violations, and broader scalp distribution of the differences between related and unrelated violations constitute the neural correlates for the potential contributions of interpreting training to general L2 semantic integration. The results also suggest possible connections between different types of language experience.
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