Wash. Rev. Code § 18.83.105
The board may issue certificates of qualification with appropriate title to applicants who meet all the licensing requirements except the possession of the degree of Doctor of Philosophy or its equivalent in psychology from an accredited educational institution. These certificates of qualification certify that the holder has been examined by the board and is deemed competent to perform certain functions within the practice of psychology under the periodic direct supervision of a psychologist licensed by the board. Such functions will be specified on the certificate issued by the board. Such applicant shall comply with administrative procedures, administrative requirements, and fees determined under RCW 43.70.250 and 43.70.280. Upon petition by a holder the board of examiners may grant authority to function without immediate supervision.
RCW 18.83.105