“…Group averages cannot tell us, for instance, if explicit knowledge, learning and teaching work equally well for all learners at all times, regardless of their cognitive abilities, attitudes or personality traits. There is evidence suggesting that individuals may well differ as to the extent to which they can and will successfully construct explicit knowledge and draw on explicit learning, depending on their prior language learning experience (Roehr & Gánem-Gutiérrez, 2009; Roehr-Brackin et al, 2021), their level of proficiency in the language under study (Butler, 2002; Elder et al, 1999), the typological distance between the first language (L1) and L2 under study (Elder & Manwaring, 2004), their language learning aptitude (Alderson et al, 1997; Elder et al, 1999; Roehr & Gánem-Gutiérrez, 2009) 2 , working memory capacity (Linck & Weiss, 2011; Roehr & Gánem-Gutiérrez, 2009; Serafini, 2017; Serafini & Sanz, 2016), or cognitive style (Ziętek & Roehr, 2011). What we do not have are studies that bring together all of these variables in a single research design and include measures of explicit and/or implicit knowledge and learning as well.…”