In addition to this, captions/subtitles play an important role in lowering the affective
filter, which psychologically affects one’s learning. For example, we feel comfortable since it
is easy for us to get meaning from foreign language films with subtitles and captions. This
assumption was supported by Koskinen et al., who examined the effects of captioned videos
on incidental reading vocabulary knowledge and confirmed that captioned videos
considerably improved the reading vocabulary knowledge of the participants (cited in Yüksel
& Tanrıverdi, 2009).