The key that might not be obvious in the poll is “both biological parents” which obviously cannot be homosexual couples.
A CBS poll conducted last year showed that the children of single and/or unmarried parents were impacted significantly harder by the economic recession. A 2006 study conducted by the National Center for Juvenile Justice also found that juveniles who lived with both biological parents were less likely to join gangs or break the law than their single-parent or orphaned counterparts.
via FOXNews.com – Jennifer Aniston Backs Off of Her Single Parenthood Comments.