What is the test for determining whether a defendant is competent to stand trial?

Evidence of incompetence may emanate from several sources, including the behavior of the accused, his or her irrational behavior and prior mental evaluations. More is necessary than bizarre actions or statements by the accused to raise a doubt about competency. A reviewing court generally gives great deference to a trial court's decision whether to hold a competency hearing. (People v. Kaplan (2007) 149 Cal.App.4th 372, 383.)

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