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For evidence to be admissible enough to be admitted, the party proffering the evidence must be able to show that the source of the evidence makes it so. If evidence is in the form of witness testimony, the party that introduces the evidence must lay the groundwork for the witness's credibility and knowledge.
First adopted in 1975, the Federal Rules of Evidence codify the evidence law that applies in United States federal courts. [1] In addition, many states in the United States have either adopted the Federal Rules of Evidence, with or without local variations, or have revised their own evidence rules or codes to at least partially follow the federal rules.
Evidence governs the use of testimony (e.g., oral or written statements, such as an affidavit), exhibits (e.g., physical objects), documentary material, or demonstrative evidence, which are admissible (i.e., allowed to be considered by the trier of fact, such as jury) in a judicial or administrative proceeding (e.g., a court of law).
In United States law, the Frye standard, Frye test, or general acceptance test is a judicial test used in some U.S. state courts to determine the admissibility of scientific evidence. It provides that expert opinion based on a scientific technique is admissible only when the technique is generally accepted as reliable in the relevant scientific ...
In Daubert, the court ruled that nothing in the Federal Rules of Evidence governing expert evidence "gives any indication that 'general acceptance' is a necessary precondition to the admissibility of scientific evidence. Moreover, such a rigid standard would be at odds with the Rules' liberal thrust and their general approach of relaxing the ...
The Federal Rules of Evidence states rules regarding a piece of evidence's relevancy and whether or not it is admissible. [7] F.R.E. 402 states relevant evidence is admissible unless otherwise excluded by: "The U.S. Constitution, a federal statute, the Federal Rules of Evidence, or other rules proscribed by the Supreme Court."
The rules are promulgated by the Supreme Court of the United States, pursuant to its statutory authority under the Rules Enabling Act. [1] The Supreme Court must transmit a copy of its rules to the United States Congress no later than May 1 of the year in which they are to go into effect, and the new rule can then become effective no earlier than December 1 of that year.
Tape recordings of an interview between a government agent and a government witness is producible under the Jencks Act after the witness has testified, if the recording relates to the witness' testimony. [42] Composite drawings made from photographs are not producible. Photographs, if they relate to a witness' statement must be produced.