... It is thus not surprising that some researchers have set their sights on disentangling the role of ID factors in SA, focusing in particular on how they interact with the learning context and mediate the gains accrued from sojourns abroad. In effect, studies have been conducted that have examined, among others, such ID variables as age (e.g., Llanes & Muñoz, 2013), working memory (e.g., Grey et al., 2015), beliefs (e.g., Zaykovskaya, Rawal, & De Costa, 2017), language learning strategies (e.g., Adams, 2006), tolerance of ambiguity (e.g., Dewaele & Wei, 2013), attitudes (e.g., Llanes, Tragant, & Serrano, 2012), anxiety (e.g., Lee, 2018), willingness to communicate (WTC, e.g., Kang, 2014), personality (e.g., Tracy-Ventura, Dewaele, K€ oylü, & McManus, 2016) or identity (e.g., Kinginger, 2013). However, although the volume of empirical investigations of this kind has been on the increase, it remains scant, with some factors having been examined in just one or two studies. ...