Effects of Multimodal Glosses on Intentional Vocabulary Learning, Retention, and Learner Processing in Instagram Reels-Based Instruction
This quasi-experimental study demonstrates that embedding multimodal glosses into Instagram Reels significantly enhances intentional vocabulary learning, two-week retention, and self-reported attention and comprehension among undergraduate EFL learners compared to viewing the same content without glosses.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Language learning has long been understood as a process of building a bridge between a new word and its meaning. For decades, researchers have known that seeing a word in a sentence, hearing it spoken, and perhaps seeing a picture of it all at once helps the brain lock that information in more securely than reading a definition alone. This idea, rooted in how human memory works, suggests that when we engage multiple senses—sight, sound, and context simultaneously—we create stronger mental connections. In the modern world, this principle has migrated from textbooks to the glowing screens of our smartphones, where short videos offer a constant stream of authentic language. Yet, a critical question remains: does simply watching these videos help us learn new words, or do we need something more specific to guide our attention? The answer matters because millions of people now turn to social media for education, hoping that the engaging nature of these platforms will naturally lead to fluency.
A team of researchers set out to test this in a controlled setting, moving beyond general observations to see exactly what happens when learners watch short videos designed for language study. They focused on a specific type of video found on Instagram, known as Reels, which are brief, vertical clips that combine spoken English with visual scenes. The researchers wanted to know if adding a specific layer of help—called multimodal glosses—would make a difference. In plain terms, a gloss is a helper note. A multimodal gloss in this study was not just a text definition; it was a package of support that included the word highlighted on the screen, a written definition, and visual cues like gestures or facial expressions that clarified the meaning. The team compared two groups of students: one group watched these helpful, glossed videos, while the other group watched the exact same videos but without any of the extra help. The goal was to see if the added support led to better learning, better memory of the words a few weeks later, and a deeper sense of focus while watching.
The study involved ninety university students in Uzbekistan who were learning English. The researchers selected twenty short videos, each lasting about a minute, and identified one hundred specific words within them that the students did not yet know. To ensure the test was fair, both groups watched the same twenty videos over a period of three weeks. The only difference was that the experimental group saw the words highlighted with definitions and visual clues, while the control group saw the videos as they originally appeared. Before the study began, the students took a test to confirm they did not know the target words. Immediately after the three-week period, they took the test again, and then took it one final time two weeks later to see how much they remembered.
The results showed a clear and distinct path for the two groups. Before the videos started, both groups knew roughly the same amount of vocabulary. However, after watching the videos, the group with the glossed support showed a dramatic increase in their test scores, while the group without the glosses showed almost no change at all. The students who received the visual and textual help learned the words significantly better. When tested two weeks later, this advantage did not disappear. Although the students who learned with the glosses forgot some of the words over time, they still retained about two-thirds of what they had learned immediately after the videos. In contrast, the group that watched the videos without help remained at their original level, having gained almost nothing from the experience. This suggests that while the videos themselves were engaging, they were not enough on their own to teach new vocabulary; the specific, added support was the key factor that turned viewing into learning.
Beyond just the test scores, the researchers asked the students how they felt while watching the videos. The students who received the glosses reported that they paid more attention to the content and felt they understood the videos much better than the other group. They felt more engaged and less lost. Interestingly, however, the students did not report that they were thinking about the words in a deeper or more complex way than the other group. They felt they understood the meaning better, but they did not necessarily feel like they were working harder to process the words mentally. This indicates that the glosses helped them grasp the meaning quickly and clearly, but it did not automatically trigger a more intense internal struggle with the language. The support made the learning accessible and the comprehension immediate, but it did not change the fundamental nature of how they processed the information in their minds.
The study concludes that short-form videos on social media can be powerful tools for learning, but only when they are carefully designed to guide the learner's eye and mind. Simply putting a student in front of an interesting video is not enough to guarantee they will learn new words. The addition of multimodal glosses—combining text, highlighting, and visual context—acts as a necessary scaffold that directs attention to the new words and clarifies their meaning. This approach helps learners not only acquire new vocabulary quickly but also keep a significant portion of it in their memory for weeks afterward. While the method did not change how deeply the students processed the words internally, it successfully made the learning experience more effective and understandable. For educators and learners alike, the finding is clear: the technology of the video is just the delivery method; the real learning comes from the thoughtful design of the support built into it.
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