cell phone addiction in teens 

population: 600 respondents between the ages of 13 and 17

sample type: voluntary

influencing factors: the type of kids who were surveyed, what kind of technology they own, how strict their parents are and what rules they must obey, how much free time they have

I predict that most of these kids have no restrictions on their cell phone use or that their parents have poor success when they try to limit them.

I assume that these kids are in control of their phones.

 

http://mashable.com/2012/08/21/teens-mobile-phones/#PO1ywjHT_ZqT