Evidence: What's Admissible In Court?

what can be used me in law of court

A court of law is a government entity that has the authority to resolve legal disputes between parties and administer justice in civil, criminal, and administrative matters. It is presided over by a judge or a panel of judges, who may be referred to as the bench, and is constituted by a minimum of three parties: the plaintiff, the defendant, and the judicial power. The court's authority to make legal decisions and judgments is known as its jurisdiction, which varies depending on the type of court. There are various kinds of courts, including trial courts, appellate courts, administrative courts, international courts, and tribunals. The court system is a means for dispute resolution, allowing individuals to bring their claims and present their defence. Evidence presented in court may include oral or written statements, transcripts, and other forms of documentation.

Characteristics Values
Evidence Direct evidence supports a fact without an inference
Court Proceedings Docket, en banc, indictment, deposition, discovery, initial hearing, injunction, interrogatories, remand, reversal, search warrant
Court Terminology Defendant, plaintiff, conviction, counsel, counterclaim, complaint, contract, common law, court reporter, record, class action lawsuit, jury, bankruptcy
Rights Right to remain silent, right to an attorney, right to appointed counsel if indigent, right to stop answering at any time, Miranda rights

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Evidence and exhibits

Evidence is a cornerstone of any legal proceeding, from criminal trials to civil suits. Evidence can be defined as an item or information that makes the existence of a fact more or less probable. Evidence can take many forms, including documents, photographs, videos, voice recordings, DNA testing, or other tangible objects.

Courts have rules about what evidence can be admitted, and this varies by jurisdiction. For example, in the US, federal courts follow the Federal Rules of Evidence, while state courts generally follow their own rules. Evidence must be deemed relevant and not hearsay, privileged, or overly prejudicial. Evidence obtained illegally, such as through an unlawful search, will not be admitted.

There are many types of evidence that can be used in court, including:

  • Physical/Real evidence: This includes DNA, fingerprints, or other forensic evidence from a crime scene.
  • Statistical evidence: Numerical data used to prove or disprove guilt, but only certain types are allowed.
  • Character evidence: Testimonies that paint the defendant in a positive or negative light.
  • Corroborating evidence: This type of evidence confirms or authenticates other evidence, such as medical records, court documents, or witness statements.
  • Exculpatory evidence: Evidence that might exonerate the defendant, which the prosecution must disclose to the jury.
  • Digital evidence: Evidence stored on electronic devices.

It is important to note that evidence must be treated with care to ensure it is not tampered with or mishandled, as this can have serious consequences for a case.

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Court procedures

Pre-Trial Procedures

Before a trial even begins, several steps must be taken. This includes the filing of a complaint or indictment, which outlines the alleged wrongs committed by the defendant. The defendant then has an initial hearing, where they learn their rights, the charges against them, and the judge decides on bail. There may also be pre-trial conferences, plea bargaining, and other pre-trial court appearances. During this time, lawyers will also engage in discovery, where they examine the facts and documents in the possession of the opposing side to prepare for trial.

Trial Procedures

A trial typically begins with opening statements from both sides, followed by the presentation of evidence and witness testimony. This includes direct examination by the party that called the witness and cross-examination by the opposing party. After both sides have presented their cases, they will make closing arguments, and the judge will instruct the jury on the applicable laws. The jury then deliberates and returns a verdict.

Post-Trial Procedures

If the defendant is found guilty, the judge will determine sentencing. Either party may then file appeals if they are not satisfied with the verdict or sentence. In some cases, a higher court may review the decision of the lower court and decide to reverse or remand the case, meaning it sends it back to the lower court for further proceedings or to be retried without certain pieces of evidence.

The Supreme Court

The Supreme Court of the United States is the highest court in the land and has its own set of procedures. It primarily hears appeals from lower courts, but it also has original jurisdiction in cases involving disputes between states or high-ranking ambassadors and ministers. To have their case heard by the Supreme Court, a party must petition the court and receive votes from four of the nine Justices.

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Witnesses and experts

Witnesses are an essential component of a trial, providing testimony and evidence that help establish the facts of a case. There are two types of witnesses: lay witnesses and expert witnesses. Lay witnesses are individuals who have direct knowledge of or experience with the issues in a case and can provide factual testimony. Expert witnesses, on the other hand, are individuals with specialised knowledge, skills, education, or experience in a particular field who offer their expertise to assist the court in understanding complex technical or scientific matters.

The use of expert witnesses has evolved over the last 250 years, with the concept originating in the case of Folkes v. Chadd in 1782, when Lord Mansfield allowed an expert witness to give opinion evidence on the facts presented by other witnesses. Expert witnesses can include professionals such as physicians, physicists, and architects, as well as "skilled" witnesses like bankers or landowners who can provide specialised knowledge in specific areas.

The admissibility of expert witness testimony is carefully assessed by the court. The Daubert Standard, established in Daubert v. Merrell Dow Pharmaceuticals, Inc., sets guidelines for determining the admissibility of such testimony. Factors considered include whether the theory or technique can be tested, has been subjected to peer review, and has gained acceptance within the relevant scientific community. This standard aims to prevent unreliable or unscientific evidence from being presented in court.

Expert witnesses are selected by each party in a case and are required to prepare reports summarising their analysis and conclusions, which are shared with all other parties to enable effective cross-examination. They may be designated as "testifying" or "non-testifying" experts. Testifying experts provide testimony during the trial, while non-testifying experts primarily offer consultation and support during pretrial preparations.

Expert witnesses play a crucial role in helping the court understand complex issues, but their opinions must be based on reliable principles and methods, and their expertise must be relevant to the facts of the case. The court acts as a "'gatekeeper' to ensure that only qualified and relevant expert testimony is admitted, excluding unreliable or unqualified witnesses.

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Judges and juries

One of the primary duties of a judge is to "follow precedent". This means that they rely on the principles established in previous cases to decide new cases with similar facts and legal issues. Judges also have the authority to issue orders, such as arrest warrants or continuances, and they play a crucial role in managing the flow of cases through the court, including overseeing administrative functions and determining trial schedules.

Juries, on the other hand, are groups of citizens tasked with hearing the evidence presented in a trial and making factual determinations or delivering verdicts. The use of juries, particularly petit juries, is deeply rooted in English legal tradition and early American law. The role of juries has been a subject of debate, with some arguing for their inclusion in various types of cases, while others questioned the relative authority of judges and juries in the 19th century.

In the United States, the Seventh Amendment guarantees the right to a jury trial in civil cases, while Article III, Section 2 of the Constitution mandates that "the Trial of all Crimes, except in Cases of Impeachment, shall be by Jury". However, it is important to note that there are exceptions to this, such as in cases involving equity or maritime law, which are typically tried by a judge.

The dynamic between judges and juries is essential to the functioning of the legal system. While judges provide legal guidance and ensure procedural fairness, juries bring a sense of community standards and act as a check on the power of the judiciary. Together, they work to ensure that justice is served and that the law is applied appropriately.

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Verdicts and appeals

Verdicts refer to the official decisions made by a court to resolve disputes between parties in a lawsuit. In the case of criminal trials, verdicts can take the form of a conviction, or a judgment of guilt against a criminal defendant.

Appeals, on the other hand, refer to the legal proceedings in which the losing party in a lawsuit or a convicted offender in a criminal case seeks to overturn the verdict or conviction. The right to appeal is not automatic and usually requires a legal basis, such as an alleged material error in the trial procedure or the judge's interpretation of the law. In a civil case, either party may appeal to a higher court, whereas in a criminal case, only the defendant typically has the right to appeal.

The appeals process can be lengthy and complex, involving multiple courts and stages. It begins with the filing of a "Notice of Appeal" in the trial court within a specified timeframe, usually within 30 days of sentencing. The appellant then files a written argument, known as a brief, presenting their view of the facts and legal arguments for seeking a reversal of the trial court's decision. The appellee (respondent) then files an answering brief, to which the appellant may respond.

Appeals may be decided based solely on these written briefs. However, many cases are selected for "oral argument", where appellate lawyers from each side engage in a structured discussion with a panel of judges, focusing on the disputed legal principles. Each side is typically allotted a short time, around 10 to 15 minutes, to present their arguments.

The appellate court's role is to review the trial proceedings and identify any legal errors made by the lower court. It will consider whether errors occurred in applying the law and whether these errors were significant enough to justify reversing the conviction or modifying the sentence. The appellate court generally does not reweigh the evidence or reconsider the facts of the case, unless there are compelling reasons to do so.

If the appellant is unsuccessful in the Court of Appeals, they may petition the Supreme Court to review the case, although the Supreme Court only takes on a small fraction of these cases. The Supreme Court's decision on whether to accept or deny the case is final, marking the conclusion of the appellate process.

Frequently asked questions

Your Miranda rights are your rights to legal counsel and protection from self-incrimination during a police interrogation. They include the right to remain silent, the right to have an attorney present during questioning, and the right to have an attorney appointed for you if you cannot afford one.

If you give up your right to remain silent, anything you say can and will be used against you in a court of law.

No, your Miranda rights apply whenever you are in police custody, which includes formal arrest or any other deprivation of freedom associated with a formal arrest.

If the police violate your Miranda rights, it could significantly affect your case and may even lead to a dismissal of the charges against you. It is important to consult with an attorney to understand your options and protect your rights.

Miranda rights originate from the 1966 United States Supreme Court case Miranda v. Arizona, in which the Court held that police must inform individuals in custody of their constitutional protections before interrogating them.

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