The board is the sole agency empowered to examine competence in the practice of psychology. A certificate of license or registration issued by the board must show the full name of the licensee, have a serial number, be signed by the president of the board, and be attested by the secretary. The license issued by the board under this chapter must be prominently displayed at the principal place of business at which the licensee practices.
N.D.C.C. § 43-32-26