As someone who has worked with teenagers since graduating from college, nine years ago, I would say that overall human teenagers are about the same, but the world around them has changed. Vastly deep I know, but let me explain myself.
I think that kids have always been the same, sexual deviants; prone to rebellion against authority, but in yester year they were honed to learn how to suppress those urges and become a productive member of society, although some never learned how. Kids were older then, and kids remain younger for much longer now.
I think the accessibility to bring out there urges in today’s society is far too easy. With anonymity of the internet and free access to be whoever they want to be has blurred the line between what is acceptable and what is desired. I mean, I don’t think a teenager from the sixties would have threatened to rape my grandmother, but they didn’t have Xbox live back then, so who knows.