Voluntary manslaughter is the killing of a human in which the offender acted in the heat of passion, a state that would cause a reasonable person to become emotionally or mentally disturbed to the point that they cannot reasonably control their emotions. Voluntary manslaughter is one of two main types of manslaughter, the other being involuntary manslaughter.
Provocation consists of the reasons for which one person kills another. "Adequate" or "reasonable" provocation is what makes the difference between voluntary manslaughter and murder. Provocation is said to be adequate if it would cause a reasonable person to lose self-control. [1]
Voluntary manslaughter requires the same intent as murder. The charge of murder is reduced to manslaughter when the defendant's culpability for the crime is "negated" or mitigated by adequate provocation. [2]
In some jurisdictions, malice can also be negated by imperfect self-defense, the principle that an honest but unreasonable belief that it is necessary to defend oneself from imminent peril to life or great bodily injury negates malice aforethought, the mental element necessary for a murder charge, so that the chargeable offense is reduced to manslaughter. [3] Self-defense is considered imperfect when extenuating circumstances exist that are insufficient to constitute a complete legal defense to homicide, but nonetheless partially excuse the act that resulted in death.
The United States' Model Penal Code (MPC) does not use the common law language of voluntary and involuntary manslaughter. Under the MPC, a homicide that would otherwise be murder is reduced to manslaughter when committed "under the influence of extreme mental or emotional disturbance for which there is a reasonable explanation or excuse". [4] [5] Several court decisions in various jurisdictions have interpreted this language broadly by creating a subjective standard to determine whether the provocation was adequate from the defendant's point of view. This subjective standard diverges substantially from the common law reasonable person test and allows the jury greater latitude. [6]
For example, in State v. Dumlao , the court interpreted the MPC language broadly, holding that reasonableness should be evaluated from the defendant's perspective. The subjective standard for whether a provocation was reasonable, and thus adequate, would allow a jury to consider Dumlao's "mental abnormalities", including a medical diagnosis of "paranoid personality disorder". [7]
| Case name | Year | Citation | State | Doctrine | Court's decision |
|---|---|---|---|---|---|
| People v. Valentine | 1946 | 28 Cal.2d 121 | CA | Heat of passion; mere words | Resolved a century long split in California courts, holding that mere words could be adequate provocation |
| People v. Berry | 1976 | 18 Cal.3d 509 | CA | Heat of passion | Taunting or provocation over a prolonged period can be adequate provocation |
| State v. Dumlao | 1986 | 715 P.2d 822 | HI | Extreme emotional disturbance | Under the MPC, the reasonable person test for adequate provocation uses a subjective standard to be evaluated from defendant's viewpoint |
| People v. Chevalier | 1989 | 544 N.E.2d 942 | IL | Mere words | Verbal admission of infidelity is not adequate provocation |
| State v. Shane | 1993 | 590 N.E.2d 272 | OH | Mere words | Verbal admission of infidelity is not adequate provocation |
Murder is the unlawful killing of another human without justification or valid excuse committed with the necessary intention as defined by the law in a specific jurisdiction. This state of mind may, depending upon the jurisdiction, distinguish murder from other forms of unlawful homicide, such as manslaughter. Manslaughter is killing committed in the absence of malice, such as in the case of voluntary manslaughter brought about by reasonable provocation, or diminished capacity. Involuntary manslaughter, where it is recognized, is a killing that lacks all but the most attenuated guilty intent, recklessness.
In criminal law, mens rea is the mental state of a defendant who is accused of committing a crime. In common law jurisdictions, most crimes require proof both of mens rea and actus reus before the defendant can be found guilty.
In American jurisprudence, an excuse is a defense to criminal charges that is a distinct from an exculpation. Justification and excuse are different defenses in a criminal case. Exculpation is a related concept which reduces or extinguishes a person's culpability, such as their liability to pay compensation to the victim of a tort in the civil law.
In criminal law, the intoxication defense is a defense by which a defendant may claim diminished responsibility on the basis of substance intoxication. Where a crime requires a certain mental state to break the law, those under the influence of an intoxicating substance may be considered to have reduced liability for their actions. With regard to punishment, intoxication may be a mitigating factor that decreases a prison or jail sentence. Numerous factors affect the applicability of the defense.
In law, provocation is when a person is considered to have committed a criminal act partly because of a preceding set of events that might cause a reasonable individual to lose self control. This makes them less morally culpable than if the act was premeditated (pre-planned) and done out of pure malice. It "affects the quality of the actor's state of mind as an indicator of moral blameworthiness."
In criminal law, diminished responsibility is a potential defense by excuse by which defendants argue that although they broke the law, they should not be held fully criminally liable for doing so, as their mental functions were "diminished" or impaired.
Culpable homicide is a categorisation of certain offences in various jurisdictions within the Commonwealth of Nations which involves the homicide either with or without an intention to kill depending upon how a particular jurisdiction has defined the offence. Unusually for those legal systems which have originated or been influenced during rule by the United Kingdom, the name of the offence associates with Scots law rather than English law.
Malice aforethought is the "premeditation" or "predetermination" required as an element of some crimes in some jurisdictions and a unique element for first-degree or aggravated murder in a few. Insofar as the term is still in use, it has a technical meaning that has changed substantially over time.
The Homicide Act 1957 is an Act of the Parliament of the United Kingdom. It was enacted as a partial reform of the common law offence of murder in English law by abolishing the doctrine of constructive malice, reforming the partial defence of provocation, and by introducing the partial defences of diminished responsibility and suicide pact. It restricted the use of the death penalty for murder.
In English law, diminished responsibility is one of the partial defenses that reduce the offense from murder to manslaughter if successful. This allows the judge sentencing discretion, e.g. to impose a hospital order under section 37 of the Mental Health Act 1983 to ensure treatment rather than punishment in appropriate cases. Thus, when the actus reus of death is accompanied by an objective or constructive version of mens rea, the subjective evidence that the defendant did intend to kill or cause grievous bodily harm because of a mental incapacity will partially excuse his conduct. Under s.2(2) of the Homicide Act 1957 the burden of proof is on the defendant to the balance of probabilities. The M'Naghten Rules lack a volitional limb of "irresistible impulse"; diminished responsibility is the volitional mental condition defense in English criminal law.
In the English law of homicide, manslaughter is a less serious offence than murder, the differential being between levels of fault based on the mens rea or by reason of a partial defence. In England and Wales, a common practice is to prefer a charge of murder, with the judge or defence able to introduce manslaughter as an option. The jury then decides whether the defendant is guilty or not guilty of either murder or manslaughter. On conviction for manslaughter, sentencing is at the judge's discretion, whereas a sentence of life imprisonment is mandatory on conviction for murder. Manslaughter may be either voluntary or involuntary, depending on whether the accused has the required mens rea for murder.
Manslaughter is a common law legal term for homicide considered by law as less culpable than murder. The distinction between murder and manslaughter is sometimes said to have first been made by the ancient Athenian lawmaker Draco in the 7th century BC.
Imperfect self-defense is a common law doctrine recognized by some jurisdictions whereby a defendant may mitigate punishment or sentencing imposed for a crime involving the use of deadly force by claiming, as a partial affirmative defense, the honest but unreasonable belief that the actions were necessary to counter an attack. Not all jurisdictions accept imperfect self-defense as a basis to reduce a murder charge.
People v. Berry is a voluntary manslaughter case that is widely taught in American law schools for the appellate court's unusual interpretation of heat of passion doctrine. Although the defendant had time to "cool down" between his wife's verbal admission of infidelity and the killing, the California Supreme Court held that the provocation in this case was adequate to reduce a murder charge to manslaughter. The lower court had relied on the traditional definition of "adequate provocation" in its jury instructions. The California Supreme Court reversed Berry's murder conviction, while affirming Berry's conviction for assault using deadly force.
The criminal law of the United States is a manifold system of laws and practices that connects crimes and consequences. In comparison, civil law addresses non-criminal disputes. The system varies considerably by jurisdiction, but conforms to the US Constitution. Generally there are two systems of criminal law to which a person maybe subject; the most frequent is state criminal law, and the other is federal law.
English law contains homicide offences – those acts involving the death of another person. For a crime to be considered homicide, it must take place after the victim's legally recognised birth, and before their legal death. There is also the usually uncontroversial requirement that the victim be under the "King's peace". The death must be causally linked to the actions of the defendant. Since the abolition of the year and a day rule, there is no maximum time period between any act being committed and the victim's death, so long as the former caused the latter.
Manslaughter is a crime in the United States. Definitions can vary among jurisdictions, but manslaughter is invariably the act of causing the death of another person in a manner less culpable than murder. Three types of unlawful killings constitute manslaughter. First, there is voluntary manslaughter which is an intentional homicide committed in "sudden heat of passion" as the result of adequate provocation. Second, there is the form of involuntary manslaughter which is an unintentional homicide that was committed in a criminally negligent manner. Finally, there is the form of involuntary manslaughter which is an unintentional homicide that occurred during the commission or attempted commission of an unlawful act which does not amount to a felony.
State v. Dumlao is a 1986 criminal Hawaii Intermediate Court of Appeals case appealing a murder conviction on the ground that the court's decision to not issue a jury instruction for voluntary manslaughter based on extreme emotional disturbance was a reversible error. The court found that the Model Penal Code required a subjective analysis of whether provocation is adequate from the defendant's perspective. Based on medical testimony that Dumlao suffered from "paranoid personality disorder", which included symptoms of "unwarranted suspiciousness" and hypersensitivity, the Court granted Dumlao's appeal, holding that his actions on the night he killed his mother in law had been "reasonable" from his perspective.
State v. Shane is a 1992 Ohio Supreme Court voluntary manslaughter case that developed a two-step test for "reasonably sufficient provocation" and held that verbal confessions of adultery could not be "reasonably sufficient" provocation.
The categorical test is a legal standard for determining whether there has been adequate provocation to reduce a murder charge to voluntary manslaughter. Traditionally, the mens rea for murder was malice aforethought. While murder and voluntary manslaughter are both intentional homicides, adequate provocation mitigates a defendant's culpability. Adequate provocation is a legal requirement for a murder charge to be reduced to voluntary manslaughter. The test for adequate provocation varies across jurisdictions and has changed over time. The categorical approach is based on common law principles, but most courts today apply less restrictive tests, such as the extreme emotional disturbance test in Model Penal Code jurisdictions.