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Captioned video is widely used to enhance second language (L2) learners’ exposure to oral input beyond the classroom setting, and captioning has been found to provide an instantaneous, useful visual aid for parsing and understanding L2 oral discourse. Nevertheless, a meta-analysis has shown that captioning exerts a selective effect on L2 learners with different profiles. This study investigated whether L2 learners’ modality preferences (visual vs. auditory) and working memory capacity (high vs. low) would modulate the effect of full captions on L2 listening outcome. Results from 60 participants revealed that both cognitive variables affected their L2 listening to different extents. Notably, working memory capacity modulates the impact of L2 learners’ preferred modality on their listening outcome. Modality preference did not exert any significant impact on the listening outcome of L2 learners with lower working memory capacity. For L2 learners with high working memory capacity, their modality preference played a pivotal role in modulating their listening outcome; in this case, auditory learners had the best listening performance viewing the video without captions, whereas visual learners did best when watching the captioned video. These findings speak to the need for taking individual differences into consideration when employing captioned videos.

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Although repeated reading – a pedagogical practice often involving phonological support in which learners revisit novel forms in context – has been extensively studied in terms of reading fluency and comprehension, little research has explored whether it promotes language acquisition. The current study, an attempt to fill this gap, found that without explicit instruction 80 Mandarin-speaking intermediate learners of Japanese as a foreign language were capable of recognizing nearly one novel foreign orthographic form in every three seeded in passages after one hour of repeated-reading-based practice. The study also shows that the efficacy of repeated reading was modulated by how the phonological practice was implemented (e.g. shadowing, time-lapse imitation, subvocalization) and whether the target vocabulary was encountered in the same or different contexts. Additionally, repeated reading was found to be more effective with target vocabulary that shares etymological roots with the learners’ L1. Pedagogical implications based on these findings are discussed in terms of how repeated-reading-based techniques should be best implemented for the most positive outcomes in terms of incidental foreign vocabulary acquisition.

Existing research has established captions as effective second-language (L2) or foreign language (FL) listening comprehension aids. However, due to the transient nature of captions, not all learners are capable of attending to captions in all cases. Previous work posited that to leverage the impact of technologies in learning and instruction, a better understanding of the interplay between technology and cognition is warranted. In this vein, the current study set out to investigate the effects of four different caption modes (full vs. partial vs. real-time vs. control) on the listening comprehension of 95 high-intermediate Taiwanese learners of English as a foreign language (EFL) with different caption reliance (i.e. more-caption-reliant vs. less-caption-reliant). The results showed no significant difference between the participants’ listening comprehension outcomes under the four caption conditions when their caption reliance was not considered. However, when this was considered, the differences among the four caption conditions became salient, which was suggestive of the selective effect of captions on L2 learners with different caption reliance. While less-caption-reliant L2 learners had the best listening comprehension outcome under the partial-caption condition and the worst under the full-caption condition, more-caption-reliant L2 learners exhibited the best performance under the full-caption condition yet the worst under the partial-caption condition. The finding underscores the importance of considering L2 learners’ processing profiles when utilizing captioned videos as multimodal instructional/learning materials and speaks to the need of utilizing differentiated video materials for optimal listening outcomes.