This paper investigates morphosyntactic adaptation in second language (L2) sentence processing. In a pre-/posttest control group design, two experiments with intermediate to advanced German–English learners examine whether massed exposure to informative input leads to adaptation in L2 processing in that L2 readers come to integrate inflection in real-time comprehension. Experiment 1 on case marking shows that input causing prediction error and flagging the target parse leads to nativelike integration of case in the reanalysis of garden-path sentences. Experiment 2 shows partially nativelike processing of adverbial–verb tense mismatches after exposure to target input. Adaptation was selective to the experimental versus the control group in processing, yet it did not generalize to offline, explicit performance. We conclude that morphosyntactic adaptation constitutes an implicit learning mechanism in L2 processing, and we discuss its implications for models of L2 processing and acquisition.

中文翻译：

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成人 L2 处理中的形态句法适应：案例和时态违规的暴露和处理

本文研究了第二语言 (L2) 句子处理中的形态句法适应。在测试前/测试后控制组设计中，对中级到高级德语-英语学习者进行的两项实验检查了大量接触信息输入是否会导致 L2 处理的适应，因为 L2 阅读者会在实时理解中整合屈折变化。案例标记实验 1 表明，导致预测错误的输入和标记目标解析导致在花园路径句子的重新分析中类似原生的案例整合。实验 2 显示了在暴露于目标输入后对状语动词时态不匹配的部分原生处理。在处理过程中，对实验组和对照组的适应是有选择性的，但它并没有推广到离线、明确的表现。