Table 2.

Adaptive behavior in the WS and CA groups

Task	WS Group		CA Group		z	p value
	Mean ± SD	Mean rank	Mean ± SD	Mean rank
Self-dependence	17.38 ± 7.21	19.04	26.45 ± 4.86	42.9	−4.946	<0.0001
Locomotion	7.58 ± 3.65	21.87	11.35 ± 3.29	41.06	−3.992	<0.0001
Work skills	7.85 ± 3.80	18.38	14.40 ± 3.88	43.32	−5.171	<0.0001
Communication	9.73 ± 4.27	17.62	18.32 ± 4.81	43.82	−5.449	<0.0001
Socialization	8.85 ± 3.39	16.67	17.13 ± 4.24	44.44	−5.757	<0.0001
Self-management	5.88 ± 2.90	18.08	13.78 ± 4.63	43.52	−5.238	<0.0001

Data are shown as mean ± standard deviation and mean rank.

The p values were calculated using the Mann–Whitney U test.

WS, Williams syndrome; CA, chronological age.