In the context of the survey and the analysis that follows, a teen’s “closest friend” is defined as “someone you can talk to about things that are really important to you, but who is not a girlfriend or boyfriend.” Some 4% of teens in this survey indicated that they do not have anyone in their life who fits this criteria, and an additional 1% were not willing to indicate whether they have a closest friend or not. Therefore, the analysis that follows is based on the 95% of teens who explicitly indicated that they do have someone they consider to be their closest friend. Throughout this chapter, the term “teen” refers to teens with a close friend, unless otherwise noted.