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 .
extractive_keyphrases: postdoctoral fellow university income washington us different demographers frequently marriage surprisingly michigan institute individual included information africanamerican divorce presented reported multiple partner fertility statement minority population association relationship churning education social research multiple parenthood america meeting interviewed hispanic more than one father money poor single women household children
abstractive_keyphrases: ann arbor analyzed household describing researchers found demographer cassandra dorius american dream dorius more common among minority women multiple partner fertility us women surprisingly common single parenthood little education individual men