Table 6.

Results of stepwise multiple regression analysis: predictive models of speech intelligibility in American English (AE) and Korean (KR).

Group	Variables entered	R squared	F	p	beta
AE	AVS	.619	15.590	.003	4.408
Intelligibility scores	−14.375 + (4.408 × AVS)
KR	AVS	.654	18.890	.001	3.788
	VOT	.788	16.745	.001	0.963
	AR	.897	23.114	.000	−0.162
Intelligibility scores	−11.495 + (3.788 × AVS) + (0.963 × VOT) − (1.62 × AR)

Note. AVS = acoustic vowel space; VOT = voice onset time; AR = articulation rate.