As an 18 year old girl... (Score 1)

I think that these statistics have a lot to do with the degree to which an individual thinks about their decisions in day to day life, rather than any particular social stigma. People with higher IQs (in my experience, anyways) tend to consider more fully the repercussions of their actions. However, this doesn't necessarily mean that smart teens don't have sex. There is such a thing as responsible sex in a monogamous and loving relationship...even if the couple is younger than most. I personally have chosen to try to experience as much of life as possible. Drugs, sex, loud music, letting yourself be out of control- these are experiences that are as much a part of life as intellectual stimulation. Perhaps society needs to stop thinking of these things as "stupid" actions, but rather as actions that are interesting experiments with variables that need to be closely monitored.