Yes, too bad the full text is behind a paywall. So I haven't read the full study, but I was once upon a time a teenager. I recall many aspects of my and my pee

Yes, too bad the full text is behind a paywall. So I haven't read the full study, but I was once upon a time a teenager. I recall many aspects of my and my peer's psychological lives that would not be easily available to an outside researcher as part of their "comprehensive set of potential 3rd variables".