Table 3 The results of linear mixed effects models on lip aperture

	Estimate	SE	df	t value	Pr(>|t|)
(intercept)	-0.13	0.12	196	-1.13	p>0.05
Speech rate [fast]	0.32	0.14	196	2.33	p<0.05
Boundary[within-word]	-0.03	0.14	196	-0.18	p>0.05

Note: Number of observations: 196. Groups: subject, 7.