Unmarried, cohabiting parents may be putting their kids at risk for a host of personal problems-- at least according to a new report from the University of Virgina's National Marriage Project and the Institute for American Values. But are the findings in the report really as straightforward as they seem?The report, released August 16 and entitled "Why Marriage Matters," pulls together findings from 18 scholars to argue that kids living in cohabiting households don't do as well socially, educationally and psychologically as kids living in intact married households.