In English law, diminished responsibility is one of the partial defenses that reduce the offense from murder to manslaughter if successful (termed "voluntary" manslaughter for these purposes). 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 (Latin for "guilty act") of death is accompanied by an objective or constructive version of mens rea (Latin for "guilty mind"), 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.
Section 2 of the Homicide Act 1957 states: (1) Where a person kills or is party to a killing of another, he shall not be convicted of murder if he was suffering from an abnormality of mental functioning which -
(1A) Those things are -
(1B) For the purposes of subsection (1)(c), an abnormality of mental functioning provides and explanation of D's conduct if it causes, or is a significant contributory factor in causing, D to carry out that conduct.
The defence has recently been amended by s. 52 of the Coroners and Justice Act 2009, which came into force on 4 October 2010. [1]
R v Golds [2] provides a recent authority from the Court of Appeal Criminal Division on how the courts will interpret the term 'substantial'. At paragraph [55] of Elias LJ's judgment (following the paragraphing from the neutral citation given below) two senses of the word 'substantial' are identified: (i) something substantial is more than something which is merely trivial or minimal if it has "substance", or (ii) something substantial is big or large (e.g. in the sense that a substantial salary is a large one). At paragraph [72] Elias LJ concludes by opining that the court should (i) leave interpretation of the word 'substantial' to the jury, but if asked for further help should (ii) direct them under the second meaning of the term (i.e. substantial meaning big).
Voluntary intoxication will not satisfy the criterion that there must be an abnormality of mental functioning arising from a recognised medical condition (s.2(1)(a) Homicide Act 1957) and therefore cannot be relied upon as grounds for the partial defence. [3] However a person suffering from alcoholism that has led to an abnormality of mental function may have access to the partial defence. [4] In R v Gittens [5] a defendant who suffered from depression killed his wife and stepdaughter after drinking and taking drugs for medication. The direction to a jury facing both diminished responsibility and drunkenness should be:
and if the answer to that is yes,
The more chronic forms of alcoholism and the long-term use of heroin and cocaine (see R v Sanderson [6] ) can become a relevant factor where a craving for drink or drugs causes an abnormality of mind. This must be distinguished from the situation in which the abnormality of mind causes a craving for drink or drugs . R v Tandy [7] held that where a defendant could show that she was suffering from an abnormality of the mind, that it was induced by disease (namely alcoholism), and that it substantially impaired her responsibility for her actions, then the defence of diminished responsibility would be made out. In the actual case, the craving for alcohol did not render the use of alcohol involuntary. The defendant was in control when she began drinking, and the state of mind in which she killed her daughter was merely induced by the alcohol. In R v Dietschmann, [8] the House of Lords held that where a defendant suffers from an abnormality of mind within s2(1) also consumes alcohol before the killing, the jury should find him or her guilty of manslaughter if they are satisfied that, notwithstanding the alcohol consumed and its effect, the abnormality of mind substantially impaired the mental responsibility for the fatal acts. The sub-section does not require the abnormality of mind to be the sole cause of the defendant’s acts; even if the defendant would not have killed if he had not consumed alcohol, the causative effect of the alcohol does not prevent an abnormality of mind suffered by the defendant from substantially impairing his mental responsibility for the fatal acts. Dietschmann was later applied by the Court of Appeal in R v Hendy. [9]
The insanity defense, also known as the mental disorder defense, is an affirmative defense by excuse in a criminal case, arguing that the defendant is not responsible for their actions due to a psychiatric disease at the time of the criminal act. This is contrasted with an excuse of provocation, in which the defendant is responsible, but the responsibility is lessened due to a temporary mental state. It is also contrasted with the justification of self defense or with the mitigation of imperfect self-defense. The insanity defense is also contrasted with a finding that a defendant cannot stand trial in a criminal case because a mental disease prevents them from effectively assisting counsel, from a civil finding in trusts and estates where a will is nullified because it was made when a mental disorder prevented a testator from recognizing the natural objects of their bounty, and from involuntary civil commitment to a mental institution, when anyone is found to be gravely disabled or to be a danger to themself or to others.
The M'Naghten rule(s) (pronounced, and sometimes spelled, McNaughton) is a legal test defining the defence of insanity, first formulated by the House of Lords in 1843. It is the established standard in UK criminal law. Versions have been adopted in some US states, currently or formerly, and other jurisdictions, either as case law or by statute. Its original wording is a proposed jury instruction:
that every man is to be presumed to be sane, and ... that to establish a defence on the ground of insanity, it must be clearly proved that, at the time of the committing of the act, the party accused was labouring under such a defect of reason, from disease of the mind, as not to know the nature and quality of the act he was doing; or if he did know it, that he did not know he was doing what was wrong.
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.
The Infanticide Act is the name of two 20th-century acts in English law that started treating the killing of an infant child by its mother during the early months of life as a lesser crime than murder.
Battered woman syndrome (BWS) is a pattern of signs and symptoms displayed by a woman who has suffered persistent intimate partner violence—psychological, physical, or sexual—from her male partner. It is classified in the ICD-9 as battered person syndrome, but is not in the DSM-5. It may be diagnosed as a subcategory of post-traumatic stress disorder (PTSD). Victims may exhibit a range of behaviors, including self-isolation, suicidal thoughts, and substance abuse, and signs of physical injury or illness, such as bruises, broken bones, or chronic fatigue.
In criminal law, automatism is a rarely used criminal defence. It is one of the mental condition defences that relate to the mental state of the defendant. Automatism can be seen variously as lack of voluntariness, lack of culpability (unconsciousness) or excuse. Automatism means that the defendant was not aware of his or her actions when making the particular movements that constituted the illegal act.
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.
Voluntary manslaughter is the killing of a human being in which the offender acted during the heat of passion, under circumstances 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.
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.
Murder is an offence under the common law legal system of England and Wales. It is considered the most serious form of homicide, in which one person kills another with the intention to unlawfully cause either death or serious injury. The element of intentionality was originally termed malice aforethought, although it required neither malice nor premeditation. Baker, chapter 14 states that many killings done with a high degree of subjective recklessness were treated as murder from the 12th century right through until the 1974 decision in DPP v Hyam.
In English law, provocation was a mitigatory defence to murder which had taken many guises over generations many of which had been strongly disapproved and modified. In closing decades, in widely upheld form, it amounted to proving a reasonable total loss of control as a response to another's objectively provocative conduct sufficient to convert what would otherwise have been murder into manslaughter. It only applied to murder. It was abolished on 4 October 2010 by section 56(1) of the Coroners and Justice Act 2009, but thereby replaced by the superseding—and more precisely worded—loss of control defence.
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.
Although the legal system of Singapore is a common law system, the criminal law of Singapore is largely statutory in nature and historically derives largely from the Indian penal code. The general principles of criminal law, as well as the elements and penalties of general criminal offences such as assault, criminal intimidation, mischief, grievous hurt, theft, extortion, sex crimes and cheating, are set out in the Singaporean Penal Code. Other serious offences are created by statutes such as the Arms Offences Act, Kidnapping Act, Misuse of Drugs Act and Vandalism Act.
English criminal law concerns offences, their prevention and the consequences, in England and Wales. Criminal conduct is considered to be a wrong against the whole of a community, rather than just the private individuals affected. The state, in addition to certain international organisations, has responsibility for crime prevention, for bringing the culprits to justice, and for dealing with convicted offenders. The police, the criminal courts and prisons are all publicly funded services, though the main focus of criminal law concerns the role of the courts, how they apply criminal statutes and common law, and why some forms of behaviour are considered criminal. The fundamentals of a crime are a guilty act and a guilty mental state. The traditional view is that moral culpability requires that a defendant should have recognised or intended that they were acting wrongly, although in modern regulation a large number of offences relating to road traffic, environmental damage, financial services and corporations, create strict liability that can be proven simply by the guilty act.
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.
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.
Veen v R is a decision of the High Court of Australia.