Table 2. Mean MMR amplitudes (in µV) for the adults in the current study and the infants in [4].

Age Group	Distribution Type	Standard Vowel	N	Mean	SD	Confidence Interval
						Lower limit	Higher limit
Adult	Unimodal	[ε]	10	−1.12	0.99	−1.82	−0.41
		[æ]	9	−1.05	1.65	−2.31	+0.22
	Bimodal	[ε]	11	−0.35	0.86	−0.93	+0.23
		[æ]	9	−1.21	1.32	−2.23	−0.19
Infant	Unimodal	[ε]	6	−0.59	0.86	−1.71	+0.52
		[æ]	5	+1.21	1.23	−0.71	+3.14
	Bimodal	[ε]	5	+2.26	0.83	+0.97	+3.55
		[æ]	6	+0.48	0.80	−0.55	+1.50

With within-group standard deviations (SD) and 95% confidence intervals, calculated per Distribution Type and Standard Vowel.^a

^a For the infants the alpha level for the confidence intervals is 2.5% instead of 5%, because the infant study included an additional group of sleeping infants. For details see [4].