AbstractThe goal of this study is to examine the processing of Chinese relative clauses (RCs) through a self-paced reading task and to determine whether the learning environment plays a role in the second-language (L2) acquisition of RCs. We investigated two types of RCs (subject vs. object RCs) along with two positions in which a RC can occur (modifying a matrix subject noun phrase [NP] vs. a matrix object NP). Eighteen native speakers of Chinese and twenty-one L2 learners at an intermediate proficiency level participated in the study. Ten learners were students learning Chinese in the US (i. e., in a foreign-language context), whereas the other eleven learners were students studying Chinese in China (i. e., in a study-abroad context). The comprehension of sentences containing a RC and reading times (RTs) on the RC and the head noun (the segment immediately following the RC) were analyzed. The results show distinct patterns for the learners and the native speakers. The accuracy data reveals that the L2 learners in China performed better than the L2 learners in the US. Additionally, the L2 learners in China exhibited a processing speed advantage to the L2 learners in the US. The RT data highlighted important asymmetries in the L2 learners in the US and the native speakers, while the results were flat for the L2 learners in China. Specifically, L2 learners in the US took longer to read object RCs than subject RCs while the opposite pattern was obtained for the L1 speakers. Moreover, matrix-object-modifying RCs revealed shorter RTs than matrix-subject-modifying RCs for L2 learners in the US, whereas the opposite pattern was found for the L1 speakers. These findings are discussed in light of the Linear Distance Theory and the Structural Distance Theory (e. g., O’Grady 1997. Syntactic development. Chicago: University of Chicago Press). Overall, these results seem to provide support to the assumption that changes in syntactic processing happen as a result of exposure to the language environment (Cuetos et al. 1996. Parsing in different languages. In Manuel Carreias, Jose E. Garcia-Albea & Nuria Sebastien-Galles (eds.), Language processing in Spanish, 145–187. Mahwah, NJ: Erlbaum; Frenck–Mestre 2002. An on-line look at sentence processing in the second language. In Roberto Heredia & Jeanette Altarriba (eds.), Bilingual sentence processing, 217–236. Amsterdam: Elsevier Science Publishers.).