R v Quick [1973] QB 910 is an English criminal case, as to sane automatism and the sub-category of self-inducement of such a state. The court ruled that it may not be used as a defence if the defendant's loss of self-control was on the part of negligence in consuming or not consuming something which someone ought to but the jury must be properly directed so as to make all relevant findings of fact. The ruling stresses that automatism is usually easily distinct from insanity, in the few cases where the lines are blurred it is a complex problem for prosecutors and mental health professionals.
William G.H. Quick was a nurse in a mental hospital, charged with assaulting a patient. He claimed that he had been acting involuntarily as a result of common hypoglycaemia of diabetics, induced by an over-generous insulin and he had not neutralised its effects with food, which made him violently aggressive. The trial judge ruled that this constituted insanity, not automatism. Rather than risk the stigma of an acquittal on such grounds and a likely imposed treatment plan with loss of employment, the defendant changed his plea to guilty, got a conviction, and then appealed arguing he was not negligent in reaching a state of automatism whilst in a position of responsibility. The court noted alike incidences often are appealed to seek to re-argue non-negligence and thus evade criminal liability. At appeal it was ruled that the trial judge was mistaken, and that diabetic hypoglycaemia was induced by an external factor, and therefore gave rise to automatism, not insanity. The indicted facts should never had been reinterpreted as indicating insanity. The appeal court added if the hypoglycaemia were self-induced through negligence, it would not have been a defence. The jury in Bristol Crown Court were so badly directed that the conviction and that of the allied appeal would be quashed.
Lawton LJ, in his per curiam judgment:
...a self-induced incapacity will not excuse ... nor will one which could have been reasonably foreseen as a result of either doing or omitting to do something, for example, taking alcohol against medical advice after using certain prescribed drugs or failing to have regular meals while taking insulin.
... Such malfunctioning of his mind as there was, was caused by an external factor and not by a bodily disorder in the nature of a disease which disturbed the working of his mind. It follows in our judgment that Quick was entitled to have his defence of automatism left to the jury and that Mr. Justice Bridge's ruling as to the effect of the medical evidence called by him was wrong. Had the defence of automatism been left to the jury, a number of questions of fact would have had to be answered. If he was in a confused mental condition, was it due to a hypoglycaemic episode or to too much alcohol? If the former, to what extent had he brought about his condition by not following his doctor's instructions about taking regular meals? Did he know that he was getting into a hypoglycaemic episode? If yes, why did he not use the antidote of eating a lump of sugar as he had been advised to do? On the evidence which was before the jury Quick might have had difficulty in answering these questions in a manner which would have relieved him of responsibility for his acts. We cannot say, however, with the requisite degree of confidence, that the jury would have convicted him. It follows that his conviction must be quashed on the ground that the verdict was unsatisfactory.
This case is critically contrasted by legal scholars [1] with R v Hennessy, where hyperglycaemia (an excess of blood sugar caused by not taking insulin) was considered by the court to be a disease of the mind under the M'Naghten rules. [2] [3]
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 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 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.
Woolmington v DPP [1935] AC 462 is a landmark House of Lords case, where the presumption of innocence was re-consolidated.
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.
R v Daviault [1994] 3 S.C.R. 63, is a Supreme Court of Canada decision on the availability of the defence of intoxication for "general intent" criminal offences. The Leary rule which eliminated the defence was found unconstitutional in violation of both section 7 and 11(d) of the Canadian Charter of Rights and Freedoms. Instead, intoxication can only be used as a defence where it is so extreme that it is akin to automatism or insanity.
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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.
R v Tutton, [1989] 1 S.C.R. 1392 was a decision of the Supreme Court of Canada on the mens rea requirements for criminal offences related to manslaughter. The Court was split three to three over whether two parents, believing that their diabetic child was cured by God, are guilty of manslaughter for intentionally failing to give the child his insulin.
R v Stone, [1999] 2 S.C.R. 290 is a leading Supreme Court of Canada decision on the use of the defence of automatism in a criminal trial.
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.
On 14 October 2004, Pádraig Nally, an Irish farmer living in County Mayo, Republic of Ireland shot dead Irish Traveller John "Frog" Ward, who had been trespassing on his property. In November 2005 Nally was sentenced to six years' imprisonment for manslaughter. His conviction was quashed in October 2006 and, after a retrial in December 2006, he was found not guilty of manslaughter.
Bratty v Attorney-General for Northern Ireland [1963] AC 386, [1961] 3 All ER 523, [1961] UKHL 3 is a House of Lords decision relating to non-insane automatism. The court decided that medical evidence is needed to prove that the defendant was not aware of what they were doing, and if this is available, the burden of proof lies with the prosecution to prove that intention was present.
R v Bailey is a 1983 decision of the Court of Appeal of England and Wales considering criminal responsibility as to non-insane automatism. The broad questions addressed were whether a hampered state of mind, which the accused may have a legal and moral duty to lessen or avoid, gave him a legal excuse for his actions; and whether as to any incapacity there was strong countering evidence on the facts involved. The court ruled that the jury had been misdirected as to the effect of a defendant's mental state on his criminal liability. However, Bailey's defence had not been supported by sufficient evidence to support an acquittal and his appeal was dismissed.
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.
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Ross v HM Advocate1991 JC 210 is a leading Scots criminal case that concerns automatism as defence. The High Court of Justiciary clarified the rules for an accused to successfully argue automatism as a defence to a criminal charge.
Insanity in English law is a defence to criminal charges based on the idea that the defendant was unable to understand what he was doing, or, that he was unable to understand that what he was doing was wrong.
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