2012 http://www.heritage.org/marriage-and-family/report/the-regnerus-study-social-science-new-family-structures-met-intolerance By Richwine and Marshall
Despite claims that “no differences” exist between children whose parents had a same-sex relationship and children who were raised by their married biological parents, previous research cannot support such an assertion.
In 2005, the American Psychological Association (APA) declared: “Not a single study has found children of lesbian or homosexual parents to be disadvantaged in any significant respect relative to children of heterosexual parents.” This sweeping “no difference” claim has been cited by proponents of same-sex marriage to support redefining marriage. However, the implications of the APA’s conclusion are actually much more limited, due to the kind of research upon which it is based...Often forced to work with small and unrepresentative samples.
A June 2012 study [published] in Social Science Research by University of Texas sociologist Mark Regnerus...used a nationally representative random sample called the New Family Structures Study (NFSS). The Regnerus study reveal that having a parent who is or has been in a same-sex relationship is generally associated with more negative adult outcomes, especially when compared with adult children from intact biological families. For example, adults whose mother or father had a same-sex relationship have lower educational attainment than adults who grew up with their two married biological parents. They are also more likely to receive welfare, experience depression, smoke, and be arrested...these results establish an association among family structure, parental relationships, and adult outcomes—not causation. Respondents whose parent had a same-sex relationship also generally fared worse than respondents with divorced or single parents.
There are high divorce rates among same-sex couples. In Scandinavia, same-sex civil unions—essentially marriages in everything but name—have been legal for about two decades...male couples in Sweden were 35% more likely to divorce than heterosexual couples, and lesbian partners were over 200% more likely to divorce.
Regnerus has said that he would gladly have included an analysis of children raised in stable two-parent same-sex homes, but there were not enough in his data. In fact, he found only two such households after screening over 15,000 participants. This fact alone suggests that stability in same-sex parenting is a legitimate concern, although it should be emphasized—as Regnerus emphasizes—that same-sex parenting is probably more common now than it was during the childhoods of those studied in the NFSS (born between 1972 and 1993).
Beyond labeling the study “dangerous propaganda” and “appalling and irresponsible,” opponents have sought to discredit the author himself...blogger lodged an official complaint with the University of Texas, which triggered an automatic “scientific misconduct” inquiry into Regnerus’s work. On August 29, the university issued a press release exonerating Regnerus and closing the inquiry...Sober, fair-minded analysis is especially important when research has implication for an issue as politically charged as same-sex marriage.
See in this timeline: 1971 Rules for Radicals by Saul Alinsky
Another reference: https://rethinkingtheology.com/2012/10/29/what-homosexuality-advocates-dont-want-you-to-know/
JE's comment: this is all valuable information that is important for people to know. What you hear in the press is almost always opposed to this information. Like it says, "analysis is especially important when research has implication for an issue as politically charged as same-sex marriage."
What I have quoted here from Heritage Foundation is a small part of the full web page. Read it all to get a better appreciation for this matter.