3.

Acoustic correlates of focus: duration (ms). Intercept: Speaker = d1, Vowel = /i/, Focus = NO FOCUS.

Coefficient	Estimate	Std. Error	$\text{Pr}(>|z\left|\right)$
Intercept Speaker	117.75	4.10	<0.001***
f1	−9.02	3.47	0.0093**
w1	5.85	3.84	0.1277
Vowel
/ɪ/	−44.92	4.30	<0.001***
/ɛ/	−18.43	5.20	<0.001***
/æ/	22.81	5.42	<0.001***
/ɑ/	−1.22	5.54	0.8249
/ʌ/	−30.49	5.25	<0.001***
/ɔ/	13.82	7.60	0.0691
/ʊ/	−42.75	7.28	<0.001***
/u/	11.98	5.35	0.0251*
Focus	66.62	3.27	<0.001***