Table 1. Face Action Vectors Used for Speed Analysis Based on Those Reported in Zane et al. (2019).

Face action vector	Calculation
Note. Distances between points were calculated according to Equation 1. For consistency with the Zane et al. (2019) article, we calculated face distances D1–D9, though D1, D3, and D4 were not used in the current analysis.
Eyebrow widen	D2 (distance between Points 21 and 22)
Nose lengthen	D5 (distance between Points 27 and 35 + distance between Points 27 and 31) + D6 (distance between Points 31 and 35)
Lip raise	D7 (distance between Points 27 and 50 + distance between Points 27 and 52)
Mouth widen	D8 (distance between Points 48 and 54)
Mouth open	D9 (distance between Points 50 and 57 + distance between Points 52 and 57)