So you're between the ages of 13 and 24. What makes you happy?

Spending time with family was the top answer to that open-ended question, according to an extensive survey -- more than 100 questions asked of 1,280 people ages 13-24 -- conducted by The Associated Press on the nature of happiness among America's young people.

Next was spending time with friends, followed by time with a significant other. And good news for parents: Nearly three-quarters of young people say their relationship with their parents makes them happy.

"They're my foundation," says Kristiana St. John, 17, a high-school student from Queens in New York. "My mom tells me that even if I do something stupid, she's still going to love me no matter what. Just knowing that makes me feel very happy and blessed."

Other results are more disconcerting. While most young people are happy overall with the way their lives are going, there are racial differences: the poll shows whites to be happier than blacks and Hispanics. A lot of young people feel stress, particularly those from the middle class, and females more than males.

You might think money would be clearly tied to a general sense of happiness. But almost no one said "money" when asked what makes them happy, though people with the highest family incomes are generally happier with life. However, having highly educated parents is a stronger predictor of happiness than income.

And sex? Yes, we were getting to that. Being sexually active actually leads to less happiness among 13-17 year olds, according to the survey. If you're 18 to 24, sex might lead to more happiness in the moment, but not in general.

Overwhelmingly, young people think marriage would make them happy and want to be married some day. Most also want to have kids.

Finally, when asked to name their heroes, nearly half of respondents mentioned one or both of their parents. The winner, by a nose: Mom.