“…1 . The internal modifiers include (but may not be limited to) factors such as metalinguistic awareness, motivation, attitude, personality, aptitude, prejudice, emotions (i.e., positive L2 enjoyment), memory, and attention ( Ibrahim, 2020 ; Masgoret and Gardner, 2003 ; Michel et al, 2019 ; Nicol and De France, 2020 ; Dziubalska-Kołaczyk and Wrembel, in press ). We will call these modifiers mental and metalinguistic modifiers.…”