It's easy to see the variables in the study that are problematic. 1) self reporting being the most obvious "the parents agreed to answer questions about their children's social skills, academic performance and behavior at five follow-up times over the 17-year study period. "
2. The study should be compared not to all hetero couples but those who chose artificial insemination due to fertility issues for consistency and as a control. Obviously choosing this path is intentional parenting and has a great financial investment, therefore better schools opportunity etc.
3. The finding concerning whether a separation happens is interesting in that it produced no discernible difference.
We need to be discerning readers. I know I spend a lot of time reading things other than Scripture. But I find that the more time I spend reading books other that God's Word, even Christian books, especially church books I begin to focus on what I can do and get all these ideas about how to manipulate God's World...for his own good. So to have hearts and minds aligned with Christ to be able to "give an answer for our hope" we must make the Bible the plumb line, the starting point for all things. Only then will we have insight into fallen perspectives around us whether they be the lies of evil intent and errors of good intent.