It's probably more common among self-taught programmers (and I say that as one myself). Most go through the early stage of copying chunks of code and seeing if they work. Maybe not blindly copying it, but still copying code from examples or whatever. I know I did (except it was 25 years ago from Webmonkey or the php.net comments section rather than StackOverflow). I'd imagine formally-educated programmers can skip some (though not all) of that by having to learn more of the theory at first.