Table 3.

Study 2 Demographic Data across Assessments

	FXS (n=41, 84 observations)						Control (n=27, 37 observations)
	N	Mean	Median	SD	Min	Max	N	Mean	Median	SD	Min	Max
Age in Years	84	4.39	4.41	1.02	2.74	6.03	37	3.46	3.33	0.55	2.77	4.82
aMental Age	82	2.24	2.15	0.81	0.96	5.15	37	3.60	3.48	0.83	2.44	5.50
bAttention Raw	84	5.94	6	2.11	2	10	37	2.00	2	1.60	0	6
bAttention T	84	65.43	67	8.30	51	80	37	52.48	51	3.80	50	67
cProportion Failed Trials	84	0.60	0.6	0.07	0.50	0.76	37	.02	0	.01	0	.67

^aMullen Scales of Early Learning (Mullen, 1995)

^bChild Behavior Checklist (Achenbach & Rescorla, 2000)

^cProportion of failed trials within the snack delay task. Participants who passed all 6 trials “passed” the overall task.