Hi,
I backtracked through WAPATH to the published literature source for the RLE requirement.
Bockting, W.O. Psychotherapy and the real-life experience: from gender dichotomy to gender diversity, Sexologies, 17(4), 2008, 211-224......who, in turn, keeps referencing further back.....
However, there is little scientific rigor in the one-year cutoff. However, the reasoning is better than I anticipated. Below is the guts of the justification form the paper.
Finding a comfortable gender role and expression The second phase of transgender-specific psychotherapy is more behavioral. The client is encouraged to connect with peers and find community on the Internet and in real life and
to experiment with various options of transgender expression. The goal is to explore to eventually find a gender role and expression that is most comfortable. Oftentimes, this phase involves giving adult clients permission to be a ''kid'' again and engage in adolescent developmental tasks (i.e., developing a sense of competence and attractiveness in a more authentic gender role), yet not without losing sight of adult responsibilities (work, family) and appropriate interpersonal boundaries (Bockting and Coleman, 2007).
After a period of exploration and experimentation, most clients are ready to make a decision about a possible
gender—role transition and the available options of hormone therapy and/or surgery. Making a full-time gender—role transition is in essence the start of the RLE. Taking this step is terrifying for most clients. The goal of the RLE
remains to test the client's resolve and to prepare him or her for the implications of irreversible body modification
through surgery. Although the RLE no longer has to conform to a binary conceptualization of gender, clients
need to express their transgender identity in a way that is consistent with their long-term gender identification and
goals for expression. Hence, the therapist needs to help the client distinguish between gender ambiguity (e.g., bigender or gender-queer identity) and attempts to ''back into'' a gender—role transition out of fear of rejection (by family, friends, community, school or workplace). Making incremental changes without a thought—through plan, or assuming an ambiguous gender—role when the client's ultimate goal is a complete transition, may unnecessarily prolong anxiety. Rather, the client should take responsibility for the transition by planning it carefully in consultation with the therapist and peers (e.g., in group therapy). Appendices A, B and C provide examples of guidelines based on the WPATH standards of care for gender-identity disorders to evaluate the client's eligibility and readiness for hormone therapy and/or surgery (see also Bockting and Goldberg, 2006).
Hugs,
Jen