Pennsylvania Psychological Association forbids any mention on its professional listserv of Britain's Cass Review about pediatric gender medicine, points to WPATH guidelines instead

This despite the fact that the Cass Review deemed that the World Professional Association for Transgender Health's guidelines on pediatric gender-transition treatment weren't scientifically rigorous.

The opening of the email to PPA members forbidding discussion of the Cass Review on its professional listserv

In a recent email to over 1,000 members of the Pennsylvania branch of the American Psychological Association, the PPA’s leadership denounced Britain’s Cass Review, which found that pediatric gender-transition treatment is based on "remarkably weak evidence," as "failing to meet the professional standard" of the PPA's adherence to "evidence-based practices." Accordingly, the PPA forbade any further mention of the Cass Review on the listserv.

Published in April, the Cass Review was nearly four years in the making. The report was commissioned by England’s National Health Service (NHS) and at 388 pages, is the most thorough analysis of the controversial field of pediatric gender-transition treatment to date. It was based in part on seven systematic literature reviews—the gold standard of scientific evidence—by evidence-based medicine experts at the University of York.

The review has …