Insanity Flashcards
What is insanity?
A special defence to criminal offence, established under the M’Naughten rules, it must be proven that D is suffering from a defect of reason, which arises from a disease of the mind so D does not know the nature or quality of the act
If insanity is successfully proven, what is the verdict?
Not guilty by reason of insanity
What is meant by defect of reason?
- This means that the defendant’s powers of reasoning must be impaired If the defendant is capable of reasoning but has failed to use those powers, then
this is not a defect of reason - R v Clarke - defect of reason must be more than absent mindedness
What is meant by a disease of the mind?
This is a legal term, not a medical one.
The disease can be a mental disease or a physical disease which affects the mind
Internal cause & need not be permanent
R v Kemp
R v Sullivan
What is meant by not knowing the nature or quality of the act?
Can occur in 2 ways
D is unconscious or in a state of impaired consciousness
Or
D is conscious but due to her mental condition she does not understand what she is doing
R v Oye
R v Johnston