Table 1.

Demographics for the three cohorts. Means and SD as well as ranges are reported, and t-tests or chi-square tests (for sex) were carried out to assure that the ASD and TC groups were matched on age, in-scanner head motion (RMSD), and sex.

	Child/Adolescent Cohort			Adolescent Cohort			Adult Cohort
	ASD n = 49	TC n = 50	p	ASD n = 11	TC n = 11	p	ASD n = 17	TC n = 19	p
Age (years)
	13.65 (2.76) 7.4–17.6	13.32 (2.76) 8–18	.55	14.6 (2.1) 13–19	14.4 (1.3) 12–16	.72	49.7 (6.6) 40.4–60.6	50.4 (6.3) 40.6–60.9	.73
Sex
# female	8	10	.64	2	1	.53	3	1	.24
RMSD
rest	.06 (0.026) 0.017–0.11	.06 (0.03) 0.017–0.14	.94	.08 (0.03) 0.03–0.12	.06 (0.01) 0.04–0.08	.14	.11 (0.05) 0.04–0.22	.09 (0.05) 0.05–0.19	.26
task	–	–	–	.08 (0.03) 0.008–0.14	.06 (0.02) 0.006–0.09	.18	–	–	–
WASI-II
Verbal	103 (18) 59–147	108 (10) 87–133	.08	109 (13) 83–131	110 (17) 85–135	.83	101 (29) 45–160	116 (16) 85–144	.07
Non-Verbal	107 (19) 53–145	106 (13) 62–137	.72	112 (23) 75–156	107 (15) 80–128	.56	104 (24) 63–138	113 (11) 93–131	.13
Full-Scale	106 (18) 61–141	108 (11) 79–132	.50	112 (17) 77–136	110 (17) 88–135	.79	102 (24) 57–147	120 (11) 102–139	.01
ADOS-2
SA	10.02 (3.9) 3–20	–	–	8.54 (2.88) 3–13	–	–	10.6 (3.8) 6–19	–	–
RRB	3.02 (1.7) 0–7	–	–	2.64 (2.54) 0–9	–	–	3.5 (2.0) 1–8	–	–
Total	13.3 (4.4) 5–24	–	–	10.3 (2.76) 7–16	–	–	14.2 (4.2) 8–23	–	–