We are two psychotherapists, husband and wife, with professional involvement in the therapeutic treatment of trans-identified individuals in the UK. The material that follows is connected to a paper we presented at a multi-disciplinary conference on January 23rd, Do Not Adjust Your Set: Sex, Gender And Public Policy, and reflects our serious concern about the transition of children before maturity—though, as we would like to emphasize, we are not taking a position in regard to an adult’s right to transition. Indeed, we understand that transition is, for some adults, the optimum way to lead their lives and present to the world. In all cases, we encourage a psychotherapeutic model that provides a process of psychological exploration, in which an individual’s personality structure, beliefs, defence mechanisms, and motivations are assessed and examined in a supportive environment. All of these elements, we believe, are helpful for anyone planning this kind of life-altering decision. Between 2003 and 2007, I, Susan Evans, worked for the Gender Identity Development Service (GIDS) at the Tavistock Clinic in London, a specialised facility …