Wash. Rev. Code § 26.09.210
The court may interview the child in chambers to ascertain the child's wishes as to the child's residential schedule in a proceeding for dissolution of marriage or domestic partnership, legal separation, or declaration of invalidity. The court may permit counsel to be present at the interview. The court shall cause a record of the interview to be made and to be made part of the record in the case.
The court may seek the advice of professional personnel whether or not they are employed on a regular basis by the court. The advice given shall be in writing and shall be made available by the court to counsel upon request. Counsel may call for cross-examination any professional personnel consulted by the court.
RCW 26.09.210
Part headings not law-Severability-2008 c 6: See RCW 26.60.900 and 26.60.901.