Whereas couples worked a combined total of five to six days a week in the 1950s, nowadays it’s closer to seven or eight. At the same time, parenting has become a much more time-intensive job. Research suggests that across national boundaries, parents are dedicating substantially more time to their children.21 In the U.S., working mothers actually spend more time with their kids today than stay-at-home moms did in the 1970s.
But that time dedicated to children may be for different reasons. See The Coddling of the American Mind.