Table 5.

Wilcoxon Rank-Sum Tests of Differences in 9-Month Vocalization Features Between FXS and LRC

	FXS (n = 22)		LRC (n = 17)
	M	SD	M	SD	W	p	d
Volubility	1.25	1.18	1.30	0.92	170	.640	−.04
Complexity Ratio	3.21	7.72	4.29	8.67	175	.671	−.13
Average Duration	0.76	0.35	0.70	0.51	231	.221	.14
Duration Rangea	2.19	2.17	1.73	1.68	189	.534	.23
Average Pitchb	364.06	72.06	353.92	51.41	139	.885	.16
Pitch Rangec	146.00	107.62	157.31	109.47	101	.913	−.10

Note.

^†p < .10

^*p < .05

^**p < .01

^***p < .001.

^aSamples used for correlations involving duration range are smaller (FXS n = 21; LRC n = 16) due to some participants having too few eligible vocalizations (<2) to calculate a range.

^bSamples used for correlations involving average pitch are smaller (FXS n = 18; LRC n = 15) due to some participants having 1 or fewer vocalizations with Codability = No Overlap.

^cSamples used for correlations involving pitch range are smaller (FXS n = 17; LRC n = 13) due to some participants having too few eligible vocalizations (<2) to calculate a range.