A meta-analysis examining the relationship between parents’ sexual orientation and children's developmental outcomes

Despite the Obergefell v. Hodges (2015) Supreme Court decision allowing same-sex marriage, the current political climate has emboldened state legislatures in the United States to push for anti-LGBTQ adoption legislation, some citing that LGBTQ couples have a negative effect on children. This meta-analysis synthesized data from 32 studies on 6 developmental outcomes (child gender role behaviour, gender identity, sexual orientation, cognitive function, psychological adjustment, and quality of parent–child relationship). The overall effect size of having same-sex parents on the developmental outcomes of the children was positive and significantly different from that of heterosexual parents. Moderator analyses found that location, socioeconomic status, type of relationship, date of publication, and the child's sexual preference were significant. We provide implications for practitioners and policy, as well as recommendations for future research in this area.