(1) sufficient present ability to consult with the person's lawyer with a reasonable degree of rational understanding; or

(2) a rational as well as factual understanding of the proceedings against the person.

(b) A defendant is presumed competent to stand trial and shall be found competent to stand trial unless proved incompetent by a preponderance of the evidence.

Added by Acts 2003, 78th Leg., ch. 35, Sec. 1, eff. Jan. 1, 2004.