“…Furthermore, given that spontaneous gestures are a window into people's spatio-temporal thinking (e.g., Casasanto & Jasmin, 2012; Cienki, 1998; Núñez & Sweetser, 2006), providing a “vivid and naturalistic source of evidence for the use of space in abstract reasoning” (visualising thought) (Cooperrider, Gentner & Goldin-Meadow, 2016; Cooperrider & Goldin-Meadow, 2017; Tversky, 2011), the study of co-speech temporal gestures by late bimodal bilinguals may reveal the effect of cross-modal spatial metaphors of time on people's mental space-time mappings. Thus this study can show the cross-linguistic influence of an L2 on an L1 and may further help clarify the problem of the restructuring of temporal conceptualisation after learning an L2.…”