140 percent. During that same period, the proportion of mothers in the labor force with children under 18years of age'rose from 28 percent to 57 percent; no evidence exists that fathers are filling the gap in parental supervision.
Citing a 1981 study pollster Daniel Yankelovich, the authors ob- serve that parents are clearly putting their own "self-fulfillment" ahead of their "commitment to sacrificing personal pursuits for their children's wel- fare." Until parenthood once...