Nearly three-quarters of American mothers work full- or part-time--usually out of financial necessity--and require regular child care. How do such arrangements affect children? If they are not at home with their mothers, will they be badly behaved, intellectually delayed, or emotionally stunted?

Backed by the best current research, Alison Clarke-Stewart and Virginia Allhusen bring a reassuring answer to parents' fears and offer guidance for making difficult decisions. Quality child care, they show, may be even more beneficial to children than staying at home. Although children who spend many hours in care may be unruly compared with children at home, those who attend quality programs tend to be cognitively ahead of their peers. They are just as attached to their mothers and reap the additional benefits of engaging with other children.

Ultimately, it's parents who matter most; what happens at home makes the difference in how children develop. And today's working mothers actually spend more time interacting with their children than stay-at-home mothers did a generation ago.

Author photos by Patricia Marin

Alison Clarke-Stewart is Professor of Psychology and Social Behavior and Associate Dean of Research at the University of California, Irvine.

Virginia D. Allhusen is Research Associate in Psychology and Social Behavior and, along with Clarke-Stewart, is senior researcher in the NICHD Study of Early Child Care and Youth Development at the University of California, Irvine.

Read More by Alison Clarke-Stewart:

• Daycare, Revised Edition