document: Many women have kids with multiple fathers WASHINGTON , April 1 -LRB- UPI -RRB- - It is surprisingly common for U.S. women of all levels of income and education to have more than one father for their children , researchers found . Demographer Cassandra Dorius , a postdoctoral fellow at the University of Michigan Institute for Social Research in Ann Arbor , analyzed data on nearly 4,000 U.S. women who were interviewed more than 20 times over a period of 27 years . The data included information about individual men in each household , describing what demographers call '' `` relationship churning . '' '' Dorius found multiple fathers is common - 28 percent of all U.S. women with two or more children have children by more than one man - and it is frequently tied to marriage and divorce rather than just single parenthood . '' `` We tend to think of women with multiple partner fertility as being only poor single women with little education and money , but in fact at some point , most were married and working , and going to school and doing all the things you 're supposed to do to live the American Dream , '' '' Dorius says in a statement . However , different fathers was more common among minority women - 59 percent of African-American mothers , 35 percent of Hispanic mothers and 22 percent of white mothers reported multiple partner fertility . The study was presented at the annual meeting of the Population Association of America in Washington .
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