This study aims at exploring the potential of extensive TV viewing for L2 vocabulary learning, and the effects associated with the language of the on-screen text (L1 or L2), type of instruction (pre-teaching target items or not) and learners' proficiency. A total of 106 secondary school students (Grade 8) divided into 4 classes participated in a one-year pedagogical intervention, viewing 24 episodes of a TV series under four experimental conditions with each class being assigned to a different treatment: (1) captions and pre-teaching, (2) captions and non-preteaching, (3) subtitles and pre-teaching, and (4) subtitles and non-pre-teaching. Following a pre-/post-test design, form recall and meaning recall gains were examined. Results showed that participants learnt vocabulary in all four conditions, with greater gains in recalling form than in recalling form and meaning. The analysis also showed that, overall, groups that were pre-taught the target items performed better, independently of the language of the on-screen text. An important finding is the role of learners' proficiency prior to the intervention, with higher proficiency related to higher gains. The study contributes to the area of foreign language learning through audiovisual input with results from a longitudinal, classroom-based study with adolescent learners.

This study explores the differential effects of captions and subtitles on extensive TV viewing comprehension by adolescent beginner foreign language learners, and how their comprehension is affected by factors related to the learner, preteaching of target vocabulary, the lexical coverage of the episodes, and the testing instruments. Four classes of secondary school students took part in an 8-month intervention viewing 24 episodes of a TV series, two classes with captions, and two with subtitles. One class in each language condition received explicit instruction on target vocabulary. Comprehension was assessed through multiple-choice and true-false items, which included a combination of textually explicit and inferential items. Results showed a significant advantage of subtitles over captions for content comprehension, and prior vocabulary knowledge emerged as a significant predictor—particularly in the captions condition. Comprehension scores were also mediated by test-related factors, with true-false items receiving overall more correct responses while textually explicit and inferential items scores differed according to language of the on-screen text. Lexical coverage also emerged as a significant predictor of comprehension.

This article addresses the benefits of audio-visual input for learning second language (L2) vocabulary and grammatical constructions. Specifically, it explores the role of frequency, the effects of subtitles and captions, and the mediating role of learner proficiency on language gains in two longitudinal studies. Study 1 targets vocabulary acquisition in two groups of adolescents with an elementary L2 proficiency level who view 24 episodes of a TV series spread weekly over a whole academic year, one group with subtitles (first language) and one with captions (second language). Study 2 targets grammar acquisition in two groups of university students with an intermediate proficiency level who view 10 episodes over five weeks, one group with captions and one without captions. Results of both studies show significant correlations between language gains and frequency in the input, but the size of the frequency effect appears to depend on the type of support provided by the on-screen text. The analyses also show no significant advantage of captions or subtitles for vocabulary learning at this proficiency level, a significant advantage of captions over no captions for grammatical constructions learning, as well as the significant role of proficiency. It is concluded that viewing audio-visual material leads to L2 learning and it can support learners in their preparation for study abroad and maximize their learning experience during their sojourn.

This exploratory study investigates the effects of imagery on word learning through audio-visual input. A total of 82 adolescent EFL learners were exposed to 8 episodes of a TV series under four conditions, depending on the language of the on-screen text (L1 or L2) and whether they were pre-taught target words or not. The effects of co-occurrence of the word with its image, and the image time on screen (ITOS) were explored, alongside frequency, proficiency, and learning condition variables. Results showed that both image-related variables and frequency predicted word-form learning, while only ITOS predicted word-meaning recall, with a longer exposure to image associated to higher gains, suggesting that, at this age and proficiency level, the images associated with the words can be conducive to learning.