1 = Male
2 = Female

1 = White
2 = Black
3 = Latino
4 = Asian
5 = Native American
6 = Pacific Islander
7 = Arab
8 = other

Home situation
1 = Biological parents
2 = Biological mother only
3 = Biological father only
4 = Biological mother and stepfather
5 = Biological father and stepmother
6 = Biological parent and signficant other
7 = Other

Father education
1 = Does not apply
2 = elementary or junior high
3 = high school
4 = some college or technical school
5 = college degree
6 = graduate degree

People living in home
1 = 1-2
2 = 3
3 = 4-5
4 = 6 or more

Family income per year
1 = $20K or less
2 = $20K to $35K
3 = $35K to $60K
4 = $60,000 to $100,000
5 = $100,000 or more

Hours spent on internet per day
0 = less than 1 hour
1 = 1 hour
2 = 2 hours
3 = 3 hours
4 = 4 hours
5 = 5 hours
6 = 6 hours
7 = more than 6 hours

Problem with sleeping during past 12 months?
1 = Never
2 = Seldom
3 = Often enough
4 = Very often