All persons who are competent as witnesses in the superior courts shall be competent in all cases before the arbitrators.
(Code 1933, § 7-416, enacted by Ga. L. 1978, p. 2270, § 2; Code 1981, §9-9-125; Code 1981, §9-9-75, as redesignated by Ga. L. 1988, p. 903, § 3.)