I read most recently linked about two years ago (or possibly three) off of Smart Bitches, Trashy Novels, but originally it was mentioned in a lit course I was in circa 1999. I can't be more specific; I've been slowly going back through their archive when I think about it, but I haven't hit that one yet. There are a few via google, but most of them are short pieces on the idea, nothing near as comprehensive as that one. That one had, if I remember correctly, reference to specific research, which is why I'm still looking for it.

Which reminds me to go looking again.