单词 | burden of proof |
释义 | burden of proof The normal rule is that a defendant in a criminal case is presumed to be innocent until he is proved guilty; it is therefore the duty of the prosecution to prove its case by establishing both the actus reus of the crime and the mens rea. It must first satisfy the evidential burden to show that its allegations have something to support them. If it cannot satisfy this burden, the defence may submit or the judge may direct that there is no case to answer, and the judge must direct the jury to acquit. The prosecution may sometimes rely on presumptions of fact to satisfy the evidential burden of proof (e.g. the fact that a woman was subjected to violence during sexual intercourse will normally raise a presumption to support a charge of rape and prove that she did not consent). If, however, the prosecution has established a basis for its case, it must then continue to satisfy the persuasive burden by proving its case beyond reasonable doubt (see also proof beyond reasonable doubt). It is the duty of the judge to tell the jury clearly that the prosecution must prove its case and that it must prove it beyond reasonable doubt; if he does not give this clear direction, the defendant is entitled to be acquitted. There are some exceptions to the normal rule that the burden of proof is upon the prosecution. The main exceptions are as follows: 1. When the defendant admits the elements of the crime (the actus reus and mens rea) but pleads a special defence, the evidential burden is upon him to create at least a reasonable doubt in his favour. This may occur, for example, in a prosecution for murder in which the defendant raises a defence of self-defence. 2. When the defendant pleads coercion, diminished responsibility, or insanity, both the evidential and persuasive burden rest upon him. In this case, however, it is sufficient if he proves his case on a balance of probabilities (i.e. he must persuade the jury that it is more likely that he was insane than not). 3. In some cases statute expressly places a persuasive burden on the defendant; for example, a person who carries an offensive weapon in public is guilty of an offence unless he proves that he had lawful authority or a reasonable excuse. |
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