When an individual that's on trial did not know right from wrong at the time he committed a crime, then the verdict might be based on his insanity.
The insanity rule that can used to achieve this is the M'Naghten Rule as the test is used to determine whether a criminal defendant is aware of the nature of the crime that he or she committed and if the person understood right from wrong
It should be thirty minutes three times a week for it to be beneficial. But if you want to go with a stronger goal, it should be four to five times a week.