Homicide: Manslaughter Notes

Voluntary Manslaughter

Occurs when the defendant had the necessary mens rea and actus reus for murder, but circumstances partially excuse them. This reduces the charge to voluntary manslaughter, carrying a discretionary life sentence. Partial defenses include:

  • Provocation
  • Diminished responsibility
  • Participation in a suicide pact

Provocation

Modified by Section 6 of the Offences Against the Person Act. The jury considers if the provocation was enough to make a reasonable man act as the defendant did.

Key elements:

  • Sudden impulse without pre-mediation.
  • The act would cause a reasonable person to lose self-control temporarily.

Cases like R v Doughty, R v Cocker, R v Duffy, R v Ibrams and Gregory, R v Ahluwalia, R v Thornton, and Phillips v R provide guidance on the application of provocation. The standard includes consideration of a 'reasonable person' (DPP v Camplin), accounting for age and sex.

Diminished Responsibility

Section 5 of the Offences Against the Person Act states that a person isn't convicted of murder if suffering from an abnormality of mind that substantially impaired mental responsibility. Requires proof of:

  1. Abnormality of the mind
  2. Arising from:
    • Arrested or retarded development
    • Inherent causes
    • Disease
    • Injury
  3. Substantial impairment of mental responsibility.

R v Byrne clarifies these requirements. Cases like R v Ahluwaliah exemplify successful pleas, often involving conditions like battered woman syndrome. Intoxication is generally excluded unless it causes long-term issues like brain injury (R v Gittens, R v Tandy, R v Sanderson).

The jury decides if the accused's impulse substantially impaired responsibility, considering all evidence (R v Egan).

Participation in a Suicide Pact

Section 7 of the Offences Against the Person Act reduces murder to manslaughter when acting in pursuance of a suicide pact. Requires a common agreement for the death of all parties, with a settled intention of dying as part of the pact.

Involuntary Manslaughter

Unlawful death without malice aforethought, categorized as:

  • Constructive manslaughter
  • Reckless manslaughter
  • Manslaughter by gross negligence

Constructive Manslaughter

Three elements:

  1. Unlawful act
  2. Dangerous act (reasonable person would recognize risk of injury)
  3. Resulting in death

DPP v Newbury and Jones illustrates this. The act must be positive (R v Lowe), and any criminal offense, not a civil one, will suffice (R v Franklin). R v Larkin and R v Church further define dangerous acts.

Cases like R v Mackie, R v Dawson, R v Watson, R v Lamb, R v Kennedy (No2), and R v Cato clarify causation and the element of unlawfulness.

Reckless Manslaughter or Manslaughter by Gross Negligence

Established by R v Adomako, this involves a five-stage test to determine liability. Gross negligence includes indifference to risk, foresight coupled with determination to run it, or inattention to serious risk. R v Seymour and Kong Cheuk Kwan v R provide context, especially in motor manslaughter cases.

Negligence must surpass civil liability standards (Bateman).

Sentencing for Manslaughter

Section 9 of the OAPA allows for imprisonment for life or a fine, with or without hard labor.