“Sen. Franken is right,” the lead author of the study told POLITICO. The survey did not exclude same-sex couples, said Debra L. Blackwell, Ph.D., nor did it exclude them from the “nuclear family” category provided their family met the study’s definition.
The study’s definition of nuclear family is: “one or more children living with two parents who are married to one another and are each biological or adoptive parents of all the children in the family."