Table 1.

Weighted Descriptives of Study Variables

			Range
	M or %	SE	Min	Max
5+ Homework Hours	39.37%		0	1
High Grades (A’s and B’s)	78.95%		0	1
Television on a weekday	3.87	1.74	1	7
Television on a weekend	4.14	1.61	1	7
Computer for school	3.25	1.66	1	9
Play electronic video games	4.52	2.32	1	9
Texting	4.54	2.46	1	9
Talking on phone	2.99	1.89	1	9
Video chatting	2.43	1.96	1	9
Social networking	4.26	2.46	1	9
Grade 8	52.09%		0	1
Male	49.29%		0	1
Black	12.91%		0	1
White	49.84%		0	1
Asian	4.41%		0	1
Hispanic	19.65%		0	1
Other	13.19%		0	1
Parent Educational Attainment (College or More)	60.56%		0	1
Enjoy School	37.68%		0	1
Participate in Extracurriculars	1.05	0.98	0	4
Drink alcohol past year	30.82%		0	1
Binge drink last 2 weeks	7.81%		0	1
Smoke marijuana last year	18.74%		0	1

Note. The response scale for watching television on an average weekday was 1=“None,” 2= “Half hour or less,” 3=”About one hour,” 4=“About two hours,” 5=“About 3 hours,” 6=“About four hours,” 7= “Five hours or more.” The response scale for watching television on an average weekend was 1=“None,” 2= “Half hour or less,” 3= “1–2 hours,” 4= “3–4 hours,” 5= “5–6 hours,” 6= “7–8 hours,” 7= “9+ hours.” The response scale for time using a computer for school and playing video games per week was 1= “None,” 2= “Less than 1 hour,” 3= “1–2 hours,” 4= “3–5 hours,” 5= “6–9 hours,” 6= “10–19 hours,” 7= “20–29 hours,” 8= “30–39 hours,” 9= “40 or more hours” per week. The response scale for time using interactive media per week were 1= “None,” 2= “Less than 1 hour,” 3= “1–2 hours,” 4= “3–5 hours,” 5= “6–9 hours,” 6= “10–19 hours,” 7= “20–29 hours,” 8= “30–39 hours,” 9= “40 or more” per week.