Search for: All records

Abstract The effects of bilingual language experience on cognitive control are still debated. A recent proposal is that being bilingual enhances attentional control. This is based on studies showing smaller effects of the nature of the preceding trial on the current trial in bilinguals (Grundy et al., 2017). However, performance on such tasks can also be accounted for by lower-level processes such as the binding and unbinding of stimulus and response features. The current study used a Partial Repetition Cost paradigm to explicitly test whether language experience can affect such processes. Results showed that bi- and monolinguals did not differ in their responses when the stimulus features were task-relevant. However, the bilinguals showed smaller partial repetition costs when the features were task-irrelevant. These findings suggest that language experience does not affect lower-level processes, and supports the view that bilinguals exhibit enhanced attentional disengagement. 

Abstract The study of how bilingualism is linked to cognitive processing, including executive functioning, has historically focused on comparing bilinguals to monolinguals across a range of tasks. These group comparisons presume to capture relatively stable cognitive traits and have revealed important insights about the architecture of the language processing system that could not have been gleaned from studying monolinguals alone. However, there are drawbacks to using a group-comparison, or Traits, approach. In this theoretical review, we outline some limitations of treating executive functions as stable traits and of treating bilinguals as a uniform group when compared to monolinguals. To build on what we have learned from group comparisons, we advocate for an emerging complementary approach to the question of cognition and bilingualism. Using an approach that compares bilinguals to themselves under different linguistic or cognitive contexts allows researchers to ask questions about how language and cognitive processes interact based on dynamically fluctuating cognitive and neural states. A States approach, which has already been used by bilingualism researchers, allows for cause-and-effect hypotheses and shifts our focus from questions of group differences to questions of how varied linguistic environments influence cognitive operations in the moment and how fluctuations in cognitive engagement impact language processing. 

According to certain approaches to adaptation, readers and listeners quickly adjust their processing of sentences to match properties of recently encountered sentences. The present preregistered study used ERP (event-related brain potentials) to investigate how and when readers change their processing in response to recent exposure to sentences of a particular structure. We presented English speakers (n = 36) with three virtual blocks of English sentences with and-coordination ambiguities. In the first and third block, the ambiguity was always resolved towards a noun phrase (NP-) coordination; in the second block, the structure was always a clausal (S-) coordination. We manipulated the plausibility of the critical noun after the conjunct. N400 and P600 plausibility effects were probed to see to what extent the reader preferred an NP- coordination or expected the sentence to continue differently. Our results suggest that readers change their processing as a function of recent exposure but that they do not immediately adapt to the target structure. Furthermore, we observed substantial individual variation in the type and change in response over the course of the study. The idea that structural adaptation is immediate and a direct reflection of the properties of the recent context therefore needs to be fine-tuned.