I was shown a couple of useful research projects that were actually put together by the people at MTV. They wanted to find out what makes their demographic happy (12 to 24-year-olds being their demographic). So they conducted a study using 1,200 participants in three different cities (Philly, Atlanta, and Phoenix).
I’m actually really impressed! They’re larger documents, but they’re definitely worth the read if you work with people in that age group.