Can a defense of legal insanity be proven if the only mental disease or defect is personality disorder?

California, United States of America


The following excerpt is from People v. Lopez, F065052 (Cal. App. 2014):

In other words, the defense of legal insanity can never be proven, as a matter of law, when the only mental disease or defect is a personality disorder. (People v. Cabonce (2009) 169 Cal.App.4th 1421, 1436.)

The jury was instructed on this concept in part of CALCRIM No. 3450 as follows:

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