Jury. A jury is a sworn body of people convened to hear evidence, make findings of fact, and render an impartial verdict officially submitted to them by a court, or to set a penalty or judgment.
Juries developed in England during the Middle Ages and are a hallmark of the English common law system. They are commonly used in countries whose legal systems derive from the British Empire, such as the United Kingdom, the United States, Canada, Australia, and Ireland.
Most other countries use variations of the European civil law or Islamic sharia law systems, which do not use juries. Most trial juries are petit juries, and usually consist of twelve people.
Historically, a larger jury known as a grand jury was used to investigate potential crimes and render indictments against suspects. All common law countries except the United States and Liberia have phased out grand juries.
The modern criminal court jury arrangement has evolved out of the medieval juries in England. Members were supposed to inform themselves of crimes and then of the details of the crimes. Their function was therefore closer to that of a grand jury than that of a jury in a trial. Main article: Petit jury The petit jury hears the evidence in a trial as presented by both the plaintiff and the defendant. After hearing the evidence and often jury instructions from the judge, the group retires for deliberation, to consider a v