The purpose of the guidelines for psychological practice with transgender and gender nonconforming people (hereafter guidelines) is to assist psychologists in the pro-vision of culturally competent,. Transgender is an umbrella term for persons whose gender identity, gender expression, or behavior does not conform to that typically associated with the sex to which they were assigned at birth. The world professional association for transgender health, o wpath, (asociación profesional mundial para salud transgénera), una organización profesional dedicada al tratamiento de personas trans,.