EXAM NOTES: Causation and Mens Rea Flashcards
Explain factual causation
- R v White - but for test
- R v Dyson - causing early/premature death satisfies but for test
What is the basic rule of legal causation
- D must be ‘an operating and substantial cause’ R v Pagett, R v Smith, R v Cheshire
What is an ‘operating’ cause
R v Benge (foreman of railway work which caused a train crash)
- just one of the reasons for death - can be many
what is a ‘substantial’ cause?
R v Cato one that is more than slight or trifling
When can third party intervention break the chain of causation?
R v Pagett (girlfriend used as human shield)
- where it is “free deliberate and informed”
When can medical negligence break the chain of causation?
1) R v Smith - where it is so serious as to make the wound a part of a history; a new cause
2) R v Cheshire - where it is so important that it renders D’s act insignificant
What if the victim is particularly vulnerable?
R v Hayward
1) thin skull rule
2) take your victim as you find him
When can V’s actions break the chain of causation?
1) R v Mackie if they are unforeseeable by the reasonable man
2) R v Williams & Davis+ R v Roberts- if they are “so daft” no reasonable person could foresee them
what can be considered when deciding if V’s actions were “so daft” as to be unforeseeable?
R v Williams & Davis + R v Roberts
1) bear in mind any particular characteristics of the victim
2) make allowances for them acting in the heat of the moment
3) it could be reasonably foreseeable for D’s acts to cause V’s suicide and would therefore not be a NAI
What is the rule in refusal of treatment cases?
1) R v Holland tetanus from a cut finger - no NIA because the wound was the cause of death
2) R v Dear - suicide through reopening wounds - no NIA because the wound was the cause of death
What is the general rule relating to omissions?
R v WM Smith - no general duty to act
What is the process for a conviction through an omission?
1) D is under a legal duty to act
2) D breaches that duty
3) The breach caused the AR
4) (If necessary for the offence) D had the MR
5) The crime can be committed by omission
give an example of a legal duty to act
R v Gibbons and Proctor
- Parent owes a legal duty to act to care for their child
- Someone ‘looking after’ a family can voluntarily assume a binding duty of care
Give an example of a breach of contractual duty to act
R v Pittwood
Give an example of a breach of public duty
R v Dytham - policeman watching someone get kicked to death