This study investigates L1–L2 convergence among bilinguals at an intermediate (CEFR-B2) level of L2 proficiency, focusing on the clausal packaging of Manner and Path of motion. Previous research has shown cross-linguistic differences between English and Japanese in this domain (Allen et al., 2003; Kita & Özyürek, 2003, though note Brown & Gullberg, 2012). We compared descriptions of motion from monolingual English and Japanese speakers to L1 and L2 descriptions from Japanese users of English as a second (ESL) and foreign (EFL) language. Results showed no significant difference between the monolinguals, who predominately used single-clause constructions packaging Manner and Path. However, bilinguals, both ESL and EFL speakers, used significantly more multi-clause constructions in both their L1 and L2. Following Pavlenko (2011a), findings are interpreted as evidence for L1–L2 convergence. We discuss potential bi-directional cross-linguistic influences underpinning the L1–L2 convergence and implications for the restructuring of bilingual systems.
