Voluntary Manslaughter- Partial Defences Flashcards
Diminished Responsibility
Preliminary points
- introduced due to dissatisfaction with the defence of insanity.
- Wider ambit than insanity
- reduces murder to manslaughter.
- > burden on accused to shownon balance of probabilities that he or she is suffering from diminished responsibility..
Diminished responsibility as set out in
s.2 of Homicide Act of 1957 as ammended by s.52 of Cornoners and Justice Act 2009
D must demonstrate the following
- > abnormality of mental function caused by recognised mental condition
- > abnormality must subsstantially impaIr his/her mental ability to either:
a. Understand nature of conduct
b. form a rational judgement or
c. excercise self control
-> which provides an explanation for the defendants acts or ommisions in being party to the killing.
Abnormality of mental functioning
No clear definiton by courts or parliament.
- Law com recommends that medical def used.
‘Subsantially impair”
D’s ability to understnad conduct, forma rational judgmenet or exercise self control
- to exercise self control distinguishes diminshed responsibility from insanity
this is a jury q
-D bears burden of proof on BOP - Any planning by D may be used to show that mental ability was not impaired- R v Campbell [1997]
Byrne [1960]
D strangled and then mutilated a woman after her death. Evidencce given that Brne suffered strong perverse desires from childhood that he found it all-but impossibleto control,and it was such a desire that overwhelmed him whe he killed the woman. Falls within scop asit involves abnormality of mental function substantially impairing D’s ability to exercise self control.
Mental abnormalities recognised
-alcohol dependency - Tandy [1989], Dietschmann [2003]
–»Dowds: Voluntary acute intoxication is incapable of founding diminished responsibility.
-Depressive illness reesulting from long term abuse at hands of violent partner-Ahluwalia; or
-From stress of long-term care for terminally ill relative- Law com
Smth [1982- PMS
Seers [1998]
D killed motherw/ hammer.CA:ruled postnatal depression after giving birth could amoun to diminshed responsibility..
Ahluwalia [1993]
D absued by husband; suffered battered wife syndrome. At threat of him leaving, she set fire to him. CA: Upon appeal murder conviction quashed as battered woman syndrome acknowledged. Reduced to manslaughter.
The abnormality must provide an explanation for D’s act or ommision in being party to the killing
A matter of causation
s&s- think statute worded in a way that suggests to jury that mental condition automatically diminishes moral responsibility. Rather than questioning if there was a causal link between disease and offence.
the appeal courts are reluctant to admit fresh evidence relating to diminished responsibility:
there have been advances in medical opinion since the time of trial:
E.G Ahluwalia
Substantial Impairment of understanding of conduct, rationality or self-control
Substantial does not mean total and is not minimal, it is somewhere in-between. Parliament has left this decision to the jury based on the evidence to decide.
Ashworth J’s definition in R v Lloyd 1967
Intoxication and Defence of D.R (Case)
Di Duca 1957
-Taking alcohol/drugs is mot classed as an abnormality of mental functioning as it is self-inflicted.
Intoxication and a pre-existing abnormality of M.F (Case)
Hendy 2006
-D intoxicated and medical evidence proved an underlying brain damage and disorder at time of killing. VI is no bar to defence of D.R, as long as the underlying abnomarlity of mental function exists.
Intoxication due to alcohol dependency syndrome (Case)
Stewart 2009
Juries should apply a 3 stage test:
- The seriousness of D’s ADS.
- D’s abnormality of mental functioning must be caused by ADS.
- If so, D’s mental responsibility must be substantially impaired by ADS.