RULE 6.12
                            WITNESSES

    (a) Who May Testify. Any person may be a witness in any
action or proceeding under these rules except as hereinafter
provided or as provided in the Rules of Evidence.

    (b) When Excused. A witness subpoenaed to attend in a
criminal case is dismissed and excused from further attendance as
soon as he or she has given his or her testimony in chief and has
been cross-examined thereon, unless either party makes requests
in open court that the witness remain in attendance; and witness
fees will not be allowed any witness after the day on which his
or her testimony is given, except when the witness has in open
court been required to remain in further attendance, and when so
required the clerk shall note that fact in his or her journal.

    (c) Persons Incompetent To Testify. The following persons are
incompetent to testify: (1) Those who are of unsound mind, or
intoxicated at the time of their production for examination; and
(2) children who do not have the capacity of receiving just
impressions of the facts about which they are examined or who do
not have the capacity of relating them truly. This shall not
affect any recognized privileges.

    (d) Not Excluded on Grounds of Interest. No person offered as
a witness shall be excluded from giving evidence by reason of his
or her interest in the result of the action, as a party thereto
or otherwise, but such interest may be shown to affect his or her
credibility.

Comment
    See RCW 10.01.130.
    Amended Effective December 26, 2000