“…Most commonly, studies have controlled for individual differences in prior language experience (e.g., exposure to the second language or starting second-language proficiency). Researchers have also controlled for individual differences in working and/or short-term memory (Bowles et al, 2016;Slevc & Miyake, 2006;Swaminathan & Schellenberg, 2017), intelligence (Badr, 1965, Swaminathan & Schellenberg, 2017Schellenberg et al, 2023), motivation (Badr, 1965), and experimental context (perception or production training; Li & DeKeyser, 2017). Table 3 lists each study, their second language and music measures, what they controlled for, and their corresponding partial effect sizes.…”