—In his ruling that Arkansas’s 2021 law banning gender-affirming medical care for minors is unconstitutional, U.S. District Judge James Moody Jr. cited significant problems with the state’s selected experts: “The Court does not credit the testimony of Professor [Mark] Regnerus and gives it no weight because the Court finds that he lacks the qualifications to offer his opinions and failed to support them.”; “Dr. [Patrick] Lappert does not meet the requirements under Daubert to give opinions relevant to this case.”; “Dr. [Paul] Hruz has never treated a patient for gender dysphoria.”
—Published a deeply flawed study that attempted to demonstrate that children of same-sex parents fared worse in comparison to children raised by straight couples—without actually studying the children of same-sex parents. Both progressives and conservatives called the study bogus. A Netherlands data analysis published in 2021 reported that “children in same-sex-parented families outperform children in different-sex-parented families on multiple indicators of academic performance, including standardized tests scores, high school graduation rates, and college enrollment.”
—Published a subsequent “study” targeting pro-LGBTQ Christians that attempted to prove that favoring marriage equality leads to a sexually unrestrained, immoral world. The study was neither peer-reviewed nor did Regnerus provide details on his survey sampling.
—Was rejected as an expert witness in a Michigan marriage equality ruling. Judge Bernard A. Friedman wrote: “The Court finds Regnerus’s testimony entirely unbelievable and not worthy of serious consideration,” and that his conservative research was “hastily concocted at the behest of a third-party funder.”