4 ms·

Per #2, families are much smaller on average now so even if they count that way, I don't think that would contribute much.

• bertil 9y ago
  Related to families changing structure: what about step-parents?
  • ashark 9y ago
    Oh, relatedly, I wonder whether time in the care of non-parent adult relatives or friends-of-parents (i.e. not paid childcare or teachers) dropped substantially over the same time period.