6. Defences Involving state of mind 71-86 Flashcards
Who raises the issue of insanity?
Defence
Can a judge put the issue of insanity to the jury?
yes
Can a person be acquitted of a charge even if they have no put up a defence of insanity?
Yes. If there is strong evidence that the defendant did commit the alleged offence but was insane at the time.
What is the level of proof defence needs to show about insanity?
On the balance of probabilities. The jury thinks that it is more likely the defendant is insane that not.
is insanity a legal question or a medical one?
legal
What is NOT included in “disease of the mind”?
Temporary mental disorder caused by some external factor e.g. blow on the head, absorption of drugs, alcohol
A defence is established if mental disease rendered the defendant…….
Incapable of understanding the nature and quality of the act or omission
Does a defendant need to know an act was legally wrong?
No, the fact that they knew it was morally wrong is sufficient
Define automatism
A state of total blackout, during which a person is not conscious of their actions and not in control of them
What is the common law rule for criminal liability for acts done while in a state of automatism?
No criminal liability, actions are involuntary
examples of causes of automatism
Concussion
Sleep walking
Brain tumour
Alcohol/ drugs
Define ‘sane automatism’
The result of sleepwalking, a blow to the head or the effect of drugs
Define ‘insane automatism’
The result of a mental disease
what are the 3 situations where intoxication may be a defence to the commission of an offence?
- Where intoxication causes a disease of the mind so as to bring s23 (insanity) of CA into effect
- If intent is required as an essential element of the offence and the drunkenness is such that the defence can plead a lack of intent to commit the offence
- Where the intoxication causes a state of automatism
What must you establish for intoxication to succeed as a defence?
Reasonable doubt about the defendants required state of mind at the time of the offence