Table 12. Linear mixed effect models results of the preceding vowel durations in the Korean group

Classification	Est.	SE	df	t-value	Pr (>|t|)
(Intercept)	47.21	3.26	36	14.44	<2e–16***
Loc im-	5.42	3.53	184	1.53	0.1258
un-	8.02	3.56	185	2.53	0.0255*
Loc im-: singleton	8.85	3.64	173	2.43	0.0160*
Neg im-: singleton	–1.28	3.55	183	0.03	0.99793
un-: singleton	4.55	3.52	191	1.13	0.25967

p<.05,
p<.001.