Table 1.

Demographic, temperament, and clinical characteristics for Williams Syndrome subjects and typically-developing controls.

		Typically-Developing Control (TDC) n = 9		Williams Syndrome (WS) n = 8		TDC vs. WS
		Mean	SD	Mean	SD	t-test p value
Age (years)		25	6.36	22	3.51	.38
IQ		117	14.27	78	20.16	.002 ^*
Temperament
Retrospective	(RSRI)
Social		3.91	.34	1.92	.63	< .001 ^*
Nonsocial		3.65	.72	2.19	.76	.003 ^*
Adult	(ASRI)
Social		2.94	.46	1.71	.39	< .001 ^*
Nonsocial		2.76	.54	2.46	.52	.36
		n		n		Chi-Square p value
Gender	(%M)^a	56%		75%		.40
Race	(C:AA:A)^b	7:1:1		8:0:0		.37
Handedness	(%R)^c	67%		75%		.08

p < .05

M = Male;

C = Caucasian, AA = African American, A = Asian;

R = Right