Table 3 Results of linear mixed effects modelsNote: Number of observations: 223. Groups: Subject, 7

Null model a.i. Random effects: Null model (Speech rate)
Groups	Name	Variance	SD
Subject	(Intercept)	7.79	2.79
Residual		2.87	1.69
a.ii. Fixed effects: Null model (Speech rate)
	Estimate	SE	t-value
(Intercept)	0.13	1.07	0.12
Speech rate [fast]	-0.23	0.23	-1.03
b.i. Random effects: Null model (Boundary)
Groups	Name	Variance	SD
Subject	(Intercept)	7.79	2.79
Residual		2.79	1.67
b.ii. Fixed effects: Null model (Boundary)
	Estimate	SE	t-value
(Intercept)	-0.29	1.07	-0.27
Boundary [within-word]	0.61	0.22	2.71
Full model c.i. Random effects: Full model (Speech rate + Boundary)
Groups	Name	Variance	SD
Subject	(Intercept)	7.79	2.79
Residual		2.77	1.67
c.ii. Fixed effects: Full model (Speech rate + Boundary)
	Estimate	SE	t-value
(Intercept)	-0.18	1.07	-0.16
Speech rate [fast]	-0.24	0.22	-1.06
Boundary [within-word]	0.61	0.22	2.72