Table 1.

Demographics

Variable	Sample		Range	Skew	Kurtosis
	M	SD
N (Boys/Girls)	136 (88/48)		--	--	--
Age	10.34	1.50	5.04	0.47	−1.07
SES	48.48	11.54	46.00	−0.55	−0.40
VCI	105.62	12.65	58.00	0.12	−0.37
Ethnicity (A, BR, B, H, W)	(3, 9, 15, 17, 92)		--	--	--
Executive Function Performance Measures
PH Working Memory
Set Size 3	2.76	0.29	1.12	−1.21	0.52
Set Size 4	3.41	0.57	2.60	−1.00	0.45
Set Size 5	3.96	0.81	3.33	−0.64	−0.45
Set Size 6	3.60	1.22	5.67	−0.24	−0.52
VS Working Memory
Set Size 3	2.15	0.64	2.83	−0.99	0.40
Set Size 4	2.69	1.00	3.83	−0.61	−0.57
Set Size 5	2.81	1.11	4.33	−0.14	−0.88
Set Size 6	2.63	1.20	5.33	0.49	−0.28
Stop Signal
Block 1 (SSD)	281.07	74.86	331.25	−0.16	−0.34
Block 2 (SSD)	277.71	87.49	331.25	−0.32	−0.88
Block 3 (SSD)	277.62	83.66	331.25	−0.28	−0.62
Block 4 (SSD)	287.87	85.15	331.25	−0.58	−0.33
Go/No-Go
Block 1 (Commission Errors)	0.40	0.62	2.00	1.33	0.65
Block 2 (Commission Errors)	0.50	0.70	2.00	1.06	−0.20
Block 3 (Commission Errors)	0.74	0.90	3.00	1.03	0.13
Block 4 (Commission Errors)	1.10	1.19	5.00	0.98	0.36
Executive Function Ratings Measures
BASC-2/3: Teacher GEC (T-score)	58.66	11.39	51.00	0.33	−0.28
BASC-2/3: Parent GEC (T-scores)	62.26	11.02	47.00	−0.07	−0.61
BRIEF: Teacher Executive Function (T-score)	68.39	15.55	72.00	−0.26	−0.66
BRIEF: Parent Executive Function (T-score)	64.56	11.19	51.00	0.26	−0.54
Academic Achievement Measures
KTEA: Academic Skills Battery (Composite scores)	100.31	12.94	64.50	0.35	0.12
APRS: Academic Productivity (T-score)	44.66	9.58	44.00	−0.01	−0.18

Note: A = Asian; B = Black/African American; BR = Biracial; H = Hispanic/English-speaking; PH = Phonological; SES = Hollingshead SES total score; VCI = Verbal Comprehension Index; VS = Visuospatial; W = White/Non-Hispanic