Table 2.

Average Personality Trait Rating and Standard Deviation of Child/Adolescent and Adult Williams Syndrome and Typical Developing Participants (N=142).

	Williams Syndrome			Typically Developing
Personality Factors	< 18 years (N=28)	Adults (N=27)	t-score	< 18 years (N=34)	Adults (N=53)	t-score
Absorption	2.90 (0.61)	2.89 (0.67)	0.09	2.64 (0.51)	2.78 (0.65)	−0.99
Achievement	1.70 (0.66)	2.17 (0.64)	−2.68**	2.63 (0.72)	3.16 (0.59)	−3.85**
Aggression	1.73 (0.79)	1.46 (0.53)	1.45	1.80 (0.66)	1.57 (0.51)	1.92+
Alienation	1.77 (0.64)	1.73 (0.68)	0.22	1.74 (0.61)	1.78 (0.72)	−0.40
Control	2.08 (0.61)	2.52 (0.53)	−3.11**	2.62 (0.63)	2.58 (0.68)	0.23
Harm Avoidance	3.00 (0.76)	2.74 (0.41)	1.56	2.75 (0.68)	2.56 (0.50)	1.13
Social Closeness	3.76 (0.38)	3.61 (0.54)	1.20	3.19 (0.66)	3.04 (0.77)	1.12
Social Potency	2.46 (0.55)	2.52 (0.56)	−0.36	2.76 (0.70)	2.75 (0.69)	0.19
Stress Reaction	2.76 (0.68)	2.47 (0.72)	1.55	2.32 (0.60)	1.98 (0.66)	2.14*
Traditionalism	2.75 (0.65)	3.09 (0.64)	−1.94+	2.98 (0.63)	2.99 (0.74)	−0.13
Well-Being	3.51 (0.51)	3.35 (0.60)	1.11	3.21 (0.69)	3.30 (0.58)	−0.60

⁺p < .10

^*p < .05

^**p < .01

*** p < .001