Children living in unwed-mother homes are more likely to witness domestic violence than children growing up with their married mother and father, says a new analysis. The finding is counterintuitive since mothers who have never married would appear to be less likely to get into fights at home with someone. However, data show that the rate of witnessing domestic violence among children living with never-married mothers was 116 children per 1,000, “six times higher than the rate for children in intact families,” said psychologist Nicholas Zill, who published his findings at the Institute for Family Studies in Charlottesville, Va., in...