... At the end of both content analysis and constant comparative analysis, the agreed themes and categories were finalized employing the research articles used as shown in Table 1 below. Huang, & Huang, 2020;Dehaki, 2017;Ghasemboland & Nafissi, 2012;Hayati & Mohmedi, 2011;Hsu et al., 2013;Latifi et al., 2011;Manan, 2018;Markham & Peter, 2003;Matthew, 2020;Metruk, 2018Metruk, , 2019Mustafa & Erişti, 2019;Napikul, Cedar, & Roongrattanakool, 2018;Pattemore & Muñoz, 2020;Pujadas & Muñoz, 2019;Rahmatian & Armiun, 2011;Rokni & Ataee, 2014;Shamsaddini et al., 2014;Wagner, 2010;Wang, 2014;Winke et al., 2010;Woottipong, 2014 Studies focusing on vocabulary development (n = 26) Al-Seghayer, 2001;Arndt & Woore, 2018;Bal-Gezegin, 2014;BavaHarji et al., 2014;Ebrahimi & Bazaee, 2016;Etemadi, 2012;Fazilatfar et al., 2011;Gorjian, 2014;Heriyanto, 2015;Ina, 2014;Kabooha & Elyas, 2015;Karakaş & Sarıçoban, 2012;Kusumawati, 2019;Mardani & Najmabadi, 2016;Mousavi & Gholami, 2014;Oladunjoye, 2017;Perez et al., 2018;Peters et al., 2016;Peters & Leuven, 2018;Pujadas & Muñoz, 2019;Sinyashina, 2019;Sirmandi & Sardareh, 2016a, 2016bVanderplank, 2015;Yüksel & Tanriverdi, 2009;Zoghi & Mirzaei, 2014 Findings The data were analyzed in relation to the research questions posed in this study. Initially, the findings regarding the effectiveness of watching videos on learners' listening skill and the role of captions or subtitles in improving listening comprehension were figured out. ...