Moms are different, these days. They're more likely to have gone to college, more likely to work full-time, less likely to have more than two children, and less likely to be married than previous generation. To the data ...
... because women, in general, are much more likely to have gone to college. [Pew Social Trends]
Moms are working as hard as ever -- but they're spending more time in offices than at home ... [Pew]
... as a result, moms and dads are more similar now than ever. For most of the 20th century (and before), parents specialized. Dad worked for money. Mom worked at home. But as female education increased -- and mid-century technology made housework less time-intensive -- moms and dads became less specialized. More moms worked more for money. More dads worked more at home.
There is still a gap: 43 percent of married mothers are employed full-time, compared with 88 percent of married fathers. Full-time workers are those who usually work 35 hours or more per week. Moms, for example, are much more likely to do the "dirty work" of child care while fathers are more likely to spend a greater share of their time playing with kids or doing home maintenance, like mowing the lawn. But as you can see, it's a closing gap. [Pew]