A generation ago, it was common to see families with four or more children. But things are a bit different today.
Pew Social Trends indicates that parents now have 2.4 children on average, a number that has remained fairly stable for two decades. In addition, since 1976, the share of mothers at the end of their childbearing years who have one child has doubled, from 11 percent to 22 percent.
While s…
