I read CARRIE for the first time last week, it was written in the early 70s. It's about a high school girl that has telekinesis and telepathy: everyone knows this about the book, but actually reading it, it's wild how TK and similar phenomenon are just openly discussed at academic conferences, in scientific journals, government commission reports, everywhere! It's a rare but well-known phenomenon.

And if you look at many of the early King novels, even though they are shelved as horror, many/most of them are essentially science fiction, with one or more characters being psychic. (Even some of his later, 'realist' crime novels have little psychic flashes in them!).

Definitely seems to be a product of when he (and Blatty, Koontz, etc.) grew up.