Definition of the offence: Actus Reus & Mens Rea Flashcards
What is the burden and standard of proof in criminal law?
The legal burden of proof is on the PROSECUTION to prove all elements of the offence
The evidential burden of proof is on the PROSECUTION to provide sufficient evidence for each element of the offence
The standard of proof is BEYOND REASONABLE DOUBT
(Nb. are instances where defendant has legal burden to prove their defence, eg. diminished responsibility - standard is only on balance of probabilities)
Who has the legal & evidential burden of proof in criminal law?
The prosecution - must prove all elements of the offence & provide sufficient evidence for each element of the offence
(Nb. Certain instances where defendant has burden of proof for their defence - but only on balance of probabilities)
What is the standard of proof where the prosecution has the burden?
Beyond reasonable doubt
V high standard - convict only if sure of defendant’s guilt
What might the actus reus of an offence consist of?
An ACT (or failure to act) by the defendant (‘conduct’ crimes)
Certain CONSEQUENCES flowing from the defendant’s conduct (‘result’ crimes)
The existence of certain CIRCUMSTANCES at the time of the defendant’s conduct (‘circumstances / state of affairs’ crimes)
Is there liability for omissions?
(ie. can you be liable for a crime where you don’t act)
General rule: No liability for omissions
Exception: Where defendant has legal duty to act + breaches that duty + that breach causes the offence to occur + MR
Legal duty to act will arise where:
- STATUTORY duty to act
- CONTRACTUAL duty to act
- SPECIAL RELATIONSHIP between victim & defendant
- Duty based on the VOLUNTARY ASSUMPTION OF CARE
- Duty arising because defendant, having CREATED & BECOME AWARE of a dangerous situation, fails to take reasonable steps to avert it
What is the exception to the general rule that there is no liability for omissions?
Where the defendant has a legal duty to act + breaches that duty + the breach causes the offence to occur + requisite MR
How might a positive duty to act arise?
i. Statutory duty to act (eg. duty to report attempts to conceal proceeds of crime)
ii. Contractual duty to act
iii. Special relationship between victim & defendant
(eg. parental duty of care - parent will be liable if fail to feed child)
iv. Voluntary assumption of duty to care (must do enough to assume duty)
v. Defendant creates dangerous situation, is aware, fails to take reasonable steps to avert it
(eg. park car on hill w/o handbrake, realise its not on but go off anyway, car rolls down hill onto person - will be liable)
What must be proved as part of the actus reus for result crime?
Causation - factual & legal
What is the test for factual causation?
‘But for’ test
‘But for the defendant’s act, would the result have happened?’
If yes: no causation, no criminal liability
If no: factual causation - if legal causation also established, will be criminally liable
What is the threshold for legal causation?
The defendant must be the operating & substantial cause of the attack
Does not have to be the only cause but must be the substantial (ie. more than minimal) cause
(Consequence must be caused by the defendant’s culpable act)
+ Chain of causation will not be broken
What will break the chain of causation (novus actus interveniens)?
Intervention by a third party if
- free, informed, deliberate act OR
- not reasonably foreseeable
Fright & flight by victim if not reasonably foreseeable (‘daft escapes’)
Unforeseeable circumstances
A voluntary, informed decision of the victim - except if response to extreme circumstances
Medical negligence - only if the negligent treatment is so independent of the defendant’s acts & in itself so potent in causing death that the defendant’s acts can be seen as being insignificant
What will not break the chain of causation?
Medical negligence (usually)
Reasonably foreseeable escapes
Victim refusing medical treatment
Something special about the victim - ie. thin skull rule (must take victim as find them)
Will the intervention by a third party break the chain of causation?
Only if:
It is a free, informed, deliberate act
or
Not reasonably foreseeable
Will medical negligence break the chain of causation?
Usually not
Will only be broken if the negligent treatment is so independent of the accused’s acts & in itself so potent in causing death that can regard the contribution of the accused’s acts as insignificant
(ie. only break the chain of causation if it is ‘so overwhelming’ that the original injury becomes part of the background history)
Will the victim’s religious beliefs break the chain of causation?
No - ‘thin skull’ rule: must take victim as find them