Table 2.

Characteristics of SLI sample, subdivided according to whether ICC to syllables at C4 is above 0 (average) or below this level (low)

	Average ICC N= 28		Low ICC N= 14
Variable	Mean	SD	Mean	SD	t	d.f.*	p
N epochs tones	753.0	116.3	781.5	86.4	−1.18	40	.243
N epochs syllables	759.3	124.4	772.4	83.7	.71	34	.480
Age (months)	95.2	13.2	100.4	13.3	−.35	40	.726
Nonverbal IQ	101.1	10.7	99.8	11.4	−.81	40	.423
Auditory discrimination errors
Frequency	10.7	8.6	6.2	6.1	1.65	36	.108
Duration	17.8	9.3	15.4	9.2	.38	40	.707
Speech	9.7	12.0	6.3	6.0	.93	32	.360
	%		%		χ2		p
% male	21.4		21.4		0		1.00
% non-right handed	22.2		35.7		.86	1	.36
% receptive SLI	39.3		71.4		3.86	1	.05

^*Some missing data for auditory discrimination tasks: Frequency: N1 = 25, N2 = 13; Duration: N1 = 25, N2 = 11; Speech: N1 = 22, N2 = 12.