First- and second-language subtitles and cognitive load: An EEG study

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Experiment reveals that first-language subtitles reduce cognitive load in second-language learners, highlighting effective video enhancement methods.

L1-subtitled videos significantly reduce cognitive load in second-language learners compared to baseline videos.
Participants reported that while L1 subtitles help, L2 subtitles did not significantly lower cognitive load in comparison to baseline.
Using electroencephalography (EEG), researchers monitored brain activity while participants watched videos at varying difficulty levels.
Findings suggest first-language subtitles could enhance learning strategies for second-language education.

Lee et al. (2025) studied this question.

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Experiment reveals that first-language subtitles reduce cognitive load in second-language learners, highlighting effective video enhancement methods.