If there actually is a transcendental realm of identity that exists, in the same sense that physical reality exists, then it will not be psychology that discovers it because they lack the means to do so.
Psychology deals with humans and how they interact with reality. A patient’s discomfort about reality is not proof of the supernatural, nor is it proof that reality is not what it seems. It is simply an indication that that particular patient is uncomfortable with reality. If a psychologist is doing their job, they will help their patient come to terms with reality instead of trying to convince the entire world to pretend that reality is something that it isn’t. The entire world is not their patient, nor are we obligated to take part in their patient’s therapy.
topic: gender identity