4. One implication for further research is that other word groups (i.e. adjectives or nouns) can
be selected to work on with a focus on different language skills (i.e. listening, reading
comprehension, etc.) Another idea might be to incorporate only the keywords as subtitles
since the whole subtitled sentences make it difficult for learners to follow the flow of speech,
as they either concentrate on the speech or the subtitles. Whenever this happens, it becomes
hard to measure the vocabulary gains. Therefore, including only the target words in the form
of keywords may bring us closer to the goal.