Cal. PEN § 29
This is the official text of Cal. PEN § 29, part of California’s Penal Code — defines crimes and sets criminal procedure in California.
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Official statutory text
In the guilt phase of a criminal action, any expert testifying about a defendant’s mental illness, mental disorder, or mental defect shall not testify as to whether the defendant had or did not have the required mental states, which include, but are not limited to, purpose, intent, knowledge, or malice aforethought, for the crimes charged. The question as to whether the defendant had or did not have the required mental states shall be decided by the trier of fact.
Status: in_force · Read it on the official government site
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