“…L2 speech performance in terms of CAF has been found to interact with individual differences such as personality and anxiety (Oya et al, 2004 ), working memory (Mota, 2005 ), willingness to communicate (Nematizadeh and Wood, 2019 ), and sociocultural attitudes toward target language and culture (Sun, 2022 ), but few L2 speech studies have examined its association with co-speech gesturing, or specifically, the movements of the hand and arm during speech. Noteworthily, increasingly more researchers agree that speech and gesture are two different but closely related modalities to express thoughts (McNeill, 1992 ; Goldin-Meadow, 2003 ; Kendon, 2004 ), and their close associations have been empirically supported in terms of occurring time (Church et al, 2014 ), language development (Iverson and Goldin-Meadow, 2005 ; Vilà-Giménez et al, 2021 ), semantic content (Kita and Özyürek, 2003 ), pragmatic functions (Loehr, 2012 ), etc.…”