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Code-switching is generally dispreferred at points of non-shared word order across a bilingual's two languages. In priming studies, this dispreference persists even following exposure to a code-switched non-shared-word-order utterance. The present study delves deeper into the scope of code-switching priming by investigating whether lexical repetition across target and prime, a factor known to boost structural priming, can increase code-switching at points of word order divergence. Afrikaans–English bilinguals (n =46) heard prime sentences in which word order, lexical repetition, and switch position were manipulated and subsequently produced code-switched picture descriptions. The results show that lexical repetition boosts the priming of code-switching in a non-shared word order. The findings demonstrate that code-switching in production is affected by a dynamic interplay between factors both language-internal (i.e., word order) and language-external (i.e., priming, and specifically lexical repetition). [ABSTRACT FROM AUTHOR]

It is well established that access to the bilingual lexicon is non-selective: even in an entirely monolingual context, elements of the non-target language are active. Research has also shown that activation of the non-target language is greater at higher proficiency levels, suggesting that it may be proficiency that drives cross-language lexical activation. At the same time, the potential role of age of acquisition (AoA) in cross-language activation has gone largely unexplored, as most studies have either focused on adult L2 learners or have conflated AoA with L2 proficiency. The present study examines the roles of AoA and L2 proficiency in L2 lexical processing using the visual world paradigm. Participants were a group of early L1 Afrikaans–L2 English bilinguals (AoA 1–9 years) and a control group of L1 English speakers. Importantly, in the bilingual group, AoA and proficiency were not correlated. In the task, participants viewed a screen with four objects on it: a target object, a competitor object whose Afrikaans translation overlapped phonetically with the target object, and two unrelated distractor objects. The results show that the L2 English group was significantly more likely to look at the cross-language competitor than the L1 English group, thus providing evidence of cross-language activation. Importantly, the extent to which this activation occurred was modulated by both L2 proficiency and AoA. These findings suggest that while these two variables may have been confounded in previous research, they actually both exert effects on cross-language activation. The locus of this parallel activation effect is discussed in terms of connectionist models of bilingualism. • We investigate the roles of AoA and L2 proficiency in cross-language activation during L2 auditory word recognition. • In a visual world task, L2 speakers' fixations to the L1 competitor were modulated by both proficiency and AoA. • The results suggest that both L2 proficiency and AoA exert effects on cross-language activation. [ABSTRACT FROM AUTHOR]