Diana Fleischman
Evolutionary psychologist and researcher
Diana Fleischman spent nearly a decade at the University of Portsmouth before moving to a research post in New Mexico, giving her a transatlantic view of the gender debate. Her evolutionary psychology framework — applied to disgust, autogynephilia, and social contagion — offers British listeners some of the sharpest scientific tools for understanding a crisis the NHS is still navigating.
Diana Fleischman is an evolutionary psychologist whose career bridges Britain and the United States. She spent the better part of a decade at the University of Portsmouth before taking up her current research position in New Mexico, making her one of the few scientists with direct experience of both the British and American versions of the gender debate — two cultures that share a crisis but argue about it very differently.
In her Beyond Gender episode Disgust, Dating, and Autogynephilia: An Evolutionary Psychologist's Taboo Takes (June 2025), she joined hosts Stella O'Malley, Mia Hughes, and Dr Bret Alderman to make the case that the revulsion many people feel towards certain trans-ideological claims is not prejudice but a genuine moral signal — one evolutionary biology treats seriously as an adaptive alarm. She also examined autogynephilia, the pattern in which some males are erotically motivated by the image of themselves as women, and explored what that tells us about the surge in gender-distressed young people appearing in British schools and NHS referral pathways.
Her analysis sheds scientific light on what the Cass Review's 2024 final report documented from a clinical direction: peer-cluster effects, an absence of robust evidence for social and medical transition in minors, and the failure of services to ask hard questions about underlying causes. Fleischman's evolutionary framing offers one mechanism for those findings — social contagion, suppressed disgust responses, and the medicalisation of ordinary adolescent distress.
For British listeners still reckoning with the closure of the Tavistock's Gender Identity Development Service and the continuing row over school RSE guidance, Fleischman's willingness to name biological realities plainly and without clinical euphemism makes her one of the more clarifying voices in a debate that has rarely lacked heat but has often lacked light.
