insanity

• defendant could be guilty of insanity which is a full defence
• the outcome is not guilty by reason of insanity
• burden of proof is on the defence
• must prove that the d was suffering from insanity based on the balence of probabilities
• rules of insanity are set out in M'Naughten
• must be - defect of reason, disease of the mind, not know the nature and quality of the act
• more than absent mindedness - clarke
• can be permenant or temporary - sullivan
• is a legal term not a medical one - kemp