Table 2.

		Unstandardized Coefficients		Standardized Coefficients	t	Sig.	95% CI for B
Model		B	Std. Error	Beta			Lower Bound	Upper Bound
1	(Constant)	1·823	0·040		20·575	<0·001	1·744	1·902
	TPO	2·347	0·151	0·241	15·504	<0·001	2·050	2·644
2	(Constant)	2·190	0·083		14·337	<0·001	2·027	2·352
	TPO	3·155	0·216	0·323	14·634	<0·001	2·732	3·578
	Side	-0·034	0·040	-0·013	-0·840	0·401	-0·112	0·045
	Group	-0·607	0·080	-0·234	-7·598	<0·001	-0·764	-0·451
	Group-TPO Interaction	-1·585	0·301	-0·183	-5·274	<0·001	-2·174	-0·996

Hierarchical multiple regression for Experiment 1. B = unstandardized coefficient. TPO = Time before Prefix Onset. Side = Side of tongue recording. Group was binary (0 = control, 1 = AWS). The constant of the regression was tested against an H0 of B = 1, instead of the normal B = 0.