Table 1.

Participant characteristics: means (and standard deviations).

	ASC macrocephaly (N = 8)	ASC non-macrocephaly (N = 31)
Gender (M:F)	7:1	26:5
Age (years)	9.74 (1.49)	9.25 (1.53)
Communication checklist	24.40 (7.16)	19.58 (2.41)
Head size z-score**	2.93 (.84)	0.47 (1.06)
Non-verbal IQ	99.25 (15.85)	96.35 (17.29)
Verbal IQ	82.00 (12.01)	87.23 (12.17)
CEFT*	18.38 (6.14)	12.13 (5.36)

^*p < .05.

^**p < .001.