Code-switching is the fluid alternation between languages during bilingual speech or text. Commonly observed among bilinguals, its use is systematic and rule governed, yet more than two decades of psycholinguistic research robustly observes that bilingual language processing is slower when encountering code-switches as compared to single-language continuations—a phenomenon known as “switch costs.” While these switch costs can be attenuated under appropriate contexts (e.g., interlocutor identity, discourse and sociolinguistic cues, and frequency in syntactic constructions), they seemingly contradict the ubiquity with which bilinguals engage in code-switching. Jorge R. Valdés Kroff argues that bilinguals engage in adaptation and are sensitive to when code-switches are likely to occur, but that we miss these adaptations when we focus exclusively on the site of a code-switch encounter. We should additionally examine what happens during sentence processing after bilinguals integrate code-switches and by doing so, we can test for adaptive effects. To illustrate these adaptive effects, he will discuss three recent studies showing beneficial downstream effects on prediction, memory, and attention after comprehending code-switches during sentence processing. These adaptive effects lead to measurable “switch benefits” as compared to single-language use. By shifting focus to the tight link between the pragmatic intent of code-switching and its effect on sentence processing, we begin to open an exciting new line of questions and hypotheses.


Occurrences
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Friday, February 20, 2026, 9:00 a.m.–10:30 a.m.
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