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A defence in criminal law arises when conditions exist to negate specific elements of the crime: the actus reus when actions are involuntary, the mens rea when the defendant is unaware of the significance of their conduct, or both. These defences will mitigate or eliminate liability from a criminal offence. Insanity, automatism and diminished responsibility are examples of said defences. They each share characteristics but can be distinguished in their scope and application. Insanity, automatism and diminished responsibility all play a significant role in cases where the defendant’s mind is abnormal while committing a crime. The definition of abnormal will be reviewed in relationship to each defence. In order to identify how these three defences compare and contrast, it is first important to understand their definition and application. The appropriate defence will be used once the facts of the cases have been distinguished and they meet the legal tests. The legal test of insanity is set out in M’Naghten’s Case: “to establish a defence…of insanity it must be clearly proved that, at the time of committing 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.” To be specific, the defect of reason arises when the defendant is incapable of exercising normal reasoning. The defect of reason requires instability in reasoning rather than a failure to exercise it at a time when exercise of reason is possible. In the case of R v Clarke, the defendant was clinically depressed and in a moment of absent-mindedness, stole items from a supermarket... ... middle of paper ... ...emains on the prosecution to disprove automatism beyond reasonable doubt. It is apparent that insanity, automatism and diminished responsibility share similarities and differences in their range of application and in definition. Insanity and automatism are most similar in that they both are full defences (with different outcomes) which exist when a defendant does not have the necessary actus reus or mens rea, whereas diminished responsibility is a partial defence which only applies to murder. The source of the defendant’s mental abnormality is the greatest point of distinction between all of the defences. Whether the abnormality is internal, external or a diagnosed medical condition will play a significant role in which defence can be used. As defences they are all used for a similar reason, and that is to eliminate or reduce liability for criminal offences.
In the 1959 film Anatomy of a Murder Lieutenant Frederick Manion is accused and tried for the murder of Barney Quill; the accused rapist of Mrs. Manion, the wife of the defendant. Citing temporary insanity due to an “irresistible impulse” to seek justice for his wife’s rape, a jury finds Lt. Manion not guilty in the death of Barney Quill by reason of insanity Although the Hollywood interpretation of the insanity defense in Anatomy of a Murder results in a verdict favorable to the defense, this is not typically the case in real life criminal trials due to the specificity of circumstances that are required to support that defense. Specifically, if Lt. Manion’s trial were a real case and tried in the state of Maryland in the year 2014, his defense strategy
Slobogin, Christopher. "The Integrationist Alternative to the Insanity Defense: Reflections on the Exculpatory Scope of Mental Illness in the Wake of the Andrea Yates Trial." American Journal of Criminal Law (2003): Vol. 30 Issue 3, p315-341.
Insanity. Criminal responsibility or not guilty by reason of insanity can be evaluated through the MMPI-2. The validity scales that show if an individual is responsible by responding; knows the difference between right and wrong; or determines if the individual cannot respond to an incident the individual is accused (Walters, 2011). Bobby was aware of what he was doing, knows right and wrong; but Bobby still suffered from a mental illness. The ...
Insanity (legal sense): A person can be declared insane if they are conscious while committing the crime, committing the criminal act voluntarily, and had no intent to inflict harm. A person declared insane lacks rational intent due to a deficit or disorder, which inhibits their rational thinking
For those that don’t know, the insanity plea, as defined by Cornell Law, is based on the fact that a person accused of a crime can acknowledge that he/she committed the crime, but argue that he/she is not responsible for it because of his or her mental illness, by pleading “not guilty by reason of insanity”. This first became a problem in 1843. Daniel M’Naughten was trialed for shooting the secretary of the Prime Minister in attempt to assassinate the Prime Minister himself. It was said that M’Naughten thought the Prime Minister was the person behind all his personal and financial problems. The jury ruled him “not guilty by reason of insanity”. The reason for the verdict was M’Naughten...
The criminal justice system takes on a pivotal role in pursuing and preventing crimes in society. When a suspect is caught and then faced with charges for a violent crime, they legally have the right to a fair trial. In order for a criminal proceeding to successfully take place, the defendant must be fully aware of their surroundings, have a basic understanding of court procedures, as well as being capable of defending their one case. Competency to stand trial (CST) is essential for maintaining fairness in the courtroom and producing a just verdict. However, if a defendant is unable to understand legal proceedings due to mental illness or impairment, they must be thoroughly assessed and evaluated before declared incompetent to stand trial. Carrying out a case with a defendant who lacks mental capacity causes numerous issues because the individual is incapable of supplying their lawyers with information regarding their crime or any of the witness testimonies at trial. Lack of comprehensible communication between a defendant and attorney forces an ineffective defense in the case. Mental disturbances in the defendant that may cause disorderly conduct in the court room are considered disruptive and weaken the authority of the legal system. Supreme Court cases that have dealt with competency to stand trial issues over the years have made significant rulings, which have stressed the importance of identifying whether or not a defendant is in fact incompetent.
Law Commission, 'Criminal Liability: Insanity and Automatism', (Discussion Paper) para 1.61, citing/referring to; N Sartorius, “Stigma of Mental Illness: A Global View” in L B Cottler (ed), 'Mental Health in Public Health: the Next 100 Years' (2011) p 213-222 & H Schulze, 'Reducing the Stigma of Mental Illness: A Report from a Global Programme of the World Psychiatric Association' (2005)
Much of my skepticism over the insanity defense is how this act of crime has been shifted from a medical condition to coming under legal governance. The word "insane" is now a legal term. A nuerological illness described by doctors and psychiatrists to a jury may explain a person's reason and behavior. It however seldom excuses it. The most widely known rule in...
When someone commits a crime, he or she may use mental illness as a defense. This is called an insanity plea or insanity defense. What the insanity defense does is try to give the alleged perpetrator a fair trial. At least in extreme cases, society agrees with this principle. The problem is where do we draw the line. Under what circumstances is a person considered insane, and when are they not? The trouble with the insanity defense in recent years is the assumption that virtually all criminals have some sort of mental problem. One important point is that the crime itself, no matter how appalling, does not demonstrate insanity. Today, the insanity defense has become a major issue within the legal system. If the defendant is clearly out of touch with reality, the police and district attorney ordinarily agree to bypass the trial and let the defendant enter a mental hospital.
Biological crime theory describes that an individual is born with the desire to commit a certain crime. Evolutionary factors influence an individual’s involvement in criminal behavior. “Biological theories focus on aspects of the physical body, such as inherited genes, evolutionary factors, brain structures, or the role of hormones in influencing behavior” (Marsh, I, 2006, 3). Murderers that are innate to kill are born with factors such as mental illnesses that are the driving force as to why one may kill. Because of the biological crime theory, some individuals, though rare, are able to plead insanity. This is because the actions of the individual are said to be beyond their control (Ministry of Justice, 2006, 3).
Insanity is a legal, not a medical definition. This makes mental illness and insanity correlate with each other, only some mental illnesses are consider as inanity. Insanity includes not only the mental, illness but also mental deficiencies. There are major problems in exactly how to apply a medical theory to legal matters. Every crime involves a physical and mental act and the non-physical cause of behavior. The mens rea is the mental element that would be required for a crime, if it is absent it excuses the criminal from criminal responsibility...
In an article titled, What is Forensic Psychology, Anyway?, John Brigham attempts to explain the beginnings of psychology and law; Forensics Psychology. Brigham explains that, “forensic psychology involves the interaction of psychology and the legal process” (Brigham 274). Brigham further highlights a historical case and the precedent established by the House of Lords through the induction of the McNaughten Rule, which translates, “To establish a defense on the ground of insanity it must be clearly proved that, at the time of committing the act, the party accused was laboring under such defect of reason, from disease of the mind, as not to know nature and quality of the act he was doing, or he did know it, that he did not know he was doing what was wrong” (Finkel, 1988, p21; Brigham p275). Brigham explains that the concept of introducing psychology into the field of law ...
Crime can be described combination between both behavior and mental factors. This will prove incredibly crucial in the definition of crime in relation to mental illness. Many of those that commit crimes are not convicted due to their illness so it is important to note, for the purpose of this analysis, that all illegal activity is considered crime, regardless of conviction (Monahan and Steadman 1983).
There are two theories that justify punishment: retributivism according to which punishment ensures that justice is done, and utilitarianism which justifies punishment because it prevents further harm being done. The essence of defences is that those who do not freely choose to commit an offence should not be punished, especially in those cases where the defendant's actions are involuntary. All three of these defences concern mental abnormalities. Diminished responsibility is a partial statutory defence and a partial excuse. Insanity and automatism are excuses and defences of failure of proof. While automatism and diminished responsibility can only be raised by the defendant, insanity can be raised by the defence or the prosecution. It can be raised by the prosecution when the defendant pleads diminished responsibility or automatism. The defendant may also appeal against the insanity verdict. With insanity and diminished responsibility, the burden of proof is on the defendant. With automatism the burden of proof is on the prosecution and they must negate an automatism claim beyond reasonable doubt.
The basis of insanity is upon M’Nagten Rules (1843) which set forward the principles of a defence when the “defendant had a defect of reason” or a “disease of the mind” and was not able to understand the nature of the act they did or did not know what they were doing was wrong. These three conditions must be proved for the defence of insanity to become available. Insanity is available for the all cases that require mens rea except for strict liability cases.