Claire Cain Miller of The New York Times writes:
It has long been true that women are paid less than men at work and do more of the labor at home. It turns out those patterns start as early as childhood.
Although there are a few signs that the gap is shrinking, a variety of data shows that girls still spend more time on household chores than boys do. They are also paid less than boys for doing chores and have smaller allowances.
Boys are also more likely to be paid for personal hygiene, like brushing teeth or taking a shower, according to BusyKid. Girls are more likely to be paid for cleaning.
The gender gap in chores for children is worldwide. A recent study of 12-year-olds in 16 countries across the economic spectrum, not including the United States, found that in each of them, girls spent more time on household chores than boys did.