Statutory interpretation

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Statutory Interpretation Assignment III

(a) Extrinsic aids are tools which a judge can use to help aid themselves when interpreting a decision, they are situated outside of the relevant statute a judge would be referring to when making a decision. Extrinsic aids that a judge may use include dictionaries (from the year the act was passed), other acts, other cases (precedents) and Hansard, to name a few. Sometimes it can be very difficult for a judge to identify the exact meaning of an act, for example when a broad term is used or when changes in the use of language have occurred. This is when extrinsic aids can prove most useful, as they can help a judge to clarify the exact meaning of an act.

One example of a judge using an extrinsic aid is found in the case (Cheeseman v DPP, 1990). In this case a judge used a dictionary to identify the meaning of the word "passenger", a word which had changed in meaning since the Town Police Clauses Act, 1847 had been passed. The judge needed to identify what the word "passenger" meant at the time the act was passed, as the defendant should only be convicted if the 1847 meaning of "passenger" applied to him. To do this the judge used the Oxford English dictionary from 1847, the year the act was passed. This allowed the judge to identify what the word "passenger" meant when the act was passed and then interpret whether the defendant was a "passenger", under the 1847 definition of the word. So by using a dictionary a judge can identify the exact meaning of a particular word or phrase to help make the meaning of an act clearer, making it easier to interpret.

Another type of extrinsic aid that judges use is other cases (precedents). Sometimes judges will look at precedents, cases which establish a principal or rule that courts then uses to help aid them in interpreting subsequent cases. When judges use precedents they also need to establish whether it is a binding precedent, this means a lower court is bound by a higher courts findings and so therefore has to apply or follow the precedent established, this helps to ensure consistency in decisions throughout the court system. A judge could also look at persuasive precedents when making their decision, this type of precedent is not binding and so doesn't have to be followed, but is usually useful and relevant and can persuade a judge one way or the other. An example of a precedent is in the case (R v Gotts, 1992), where the defendant charged with attempted murder argued he could use the defence of duress. The court of appeal ruled that duress could not be used as a defence based on the precedent set out in the House of Lords in (R v Howe, 1987).
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Another extrinsic aid judges may use to aid them in making their decision is Hansard. Hansard is the official daily reports and debates in Parliament proceedings and so could help a judge to clarify the meaning of an act. There was originally a rule that meant that Hansard couldn't be used to aid judge's decisions as going through Hansard was a slow process and it was often unclear. Lord Denning however argued in (Davis v Johnson, 1979), that to not use Hansard "would be to grope around in the dark for the meaning of an act without switching ...

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