Evidence that the defendant suffered from a mental disease or disorder or developmental disability is admissible to prove that the defendant did or did not have a state of mind that is an element of the offense.
Mont. Code Ann. § 46-14-102, under Relevance of Mental Disease or Disorder.
Mont. Code Ann. § 46-14-102
Evidence that the defendant suffered from a mental disease or disorder or developmental disability is admissible to prove that the defendant did or did not have a state of mind that is an element of the offense.