Oh man, the time use surveys in the US are amazing here. I can’t find the data or remember specifics, but the amount of time both moms and dads spend parenting has gone WAY since the 60s, even as family size as plummeted.
Edit: I assumed you meant to write "way down" but now realize you probably meant up... original comment below.
That's interesting! I'm mainly going by my mother's recollections of her childhood in 1950's rural Finland, but in her words: "We kids didn't spend time with our parents. It would have been embarrassing!"
