According to my research, to prove this type of case, one must have some type of mental, cognitive or emotional defect during the criminal act.Rule of Law: The insanity must be proven under some type of mental or emotional defect caused by the disease.References: M'Naghten's Case | Files. (nd). Accessed October 22, 2014. http://www.casebriefs.com/blog/law/criminal-law/criminal-law-keyed-to-kadish/exculpation/mnaghtens-case/ Case report title and citation: Youngberg c . Romeo, 457 US 307, 102 S.Ct. 2452 (1982) Type of Action: Right to Treatment Facts of the Case: A mentally retarded man was involuntarily committed to a hospital. Claims of the parties: The family was concerned about the safety and living conditions of the hospital. Additionally, they wanted him to be free from physical restraints and have a constitutional right to sufficient skill development programs offered within the institution. Problem: His constitutional rights must still be respected because basic human needs trump his mental health.