J.D. Haltigan
Developmental psychologist and academic critic
J.D. Haltigan is a developmental psychologist who argues that activist ideology has systematically displaced scientific rigour inside academic psychology. For British listeners, his diagnosis maps directly onto what the Cass Review uncovered: a field that abandoned evidence, silenced sceptics, and left vulnerable young patients without honest clinical care.
J.D. Haltigan is a developmental psychologist whose research and writing focus on how ideological pressures have reshaped — and, he argues, degraded — the standards of evidence within academic psychology. His appearance on Beyond Gender in the episode How Activism Is Replacing Clinical Judgment in Psychology (episode 6, March 2025) offered British listeners something rare: a credentialled insider willing to name the mechanism by which a scientific discipline loses its integrity from within.
Haltigan's central argument is that academic psychology has been hollowed out by activist ideology, with scientific rigour treated as optional when conclusions are ideologically inconvenient. The pattern he describes — evidence declared settled before it is, dissent suppressed rather than debated, clinical populations treated as proxies for political causes — will be instantly recognisable to anyone who followed the long road to the Cass Review. Dr Hilary Cass found precisely this dynamic operating inside Britain's gender medicine pathway: a field in which weak evidence was laundered as consensus, whistleblowers were marginalised, and the NHS's duty of care to distressed young people was subordinated to ideological commitments.
The British stakes are acute. The Tavistock's Gender Identity Development Service was closed in 2022 after the Cass Review's interim findings; the final 2024 report confirmed that the evidence base for puberty blockers and cross-sex hormones in adolescents was far thinner than clinicians had been led to believe. Haltigan's account of how that thinness is manufactured — through citation practices, journal gatekeeping, and the social costs of dissent — explains how professional bodies can fail an entire generation of patients in plain sight.
For parents, clinicians, and policymakers navigating what comes next for NHS gender services, Haltigan's work offers a framework: not simply that bad decisions were made, but why the institutions designed to prevent bad decisions failed to do so, and what restoring genuine clinical judgment would actually require.
