expert witness

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expert witness

n. a person who is a specialist in a subject, often technical, who may present his/her expert opinion without having been a witness to any occurrence relating to the lawsuit or criminal case. It is an exception to the rule against giving an opinion in trial, provided that the expert is qualified by evidence of his/her expertise, training and special knowledge. If the expertise is challenged, the attorney for the party calling the "expert" must make a showing of the necessary background through questions in court, and the trial judge has discretion to qualify the witness or rule he/she is not an expert, or is an expert on limited subjects. Experts are usually paid handsomely for their services and may be asked by the opposition the amount they are receiving for their work on the case. In most jurisdictions, both sides must exchange the names and addresses of proposed experts to allow pre-trial depositions. (See: expert testimony)

expert witness

in the law of evidence, a witness who is allowed to give opinion evidence as opposed to evidence of his perception. This is the case only if the witness is indeed skilled in some appropriate discipline. An exception to the usual rule of practice whereby witnesses are heard one after the other and do not hear the evidence of the preceding witness is made in relation to competing experts. The term skilled witness is favoured in Scotland.
References in periodicals archive ?
Authority to source expert opinion, he said, must first be granted as the fees were often exorbitant and therefore engagement of experts was only allowed in cases with good prospects of success.
Through the Expert Opinion initiative, HCG is extending its expertise right into the patients' hand where the patient can connect with HCG through his or her mobile device or personal computer.
Since expert opinion nodes were input nodes, there was no need to enter CPT (Conditional probability table) values.
This article addresses the background of New York's Article 10 Sex Offender Management and Treatment Act, the role expert opinion plays in the trial of such cases, the Court of Appeals cases that have framed the issue, the treatment by courts in New York in sex offender civil management trials as to the admissibility of expert opinion testimony and the bases of such opinion, the way the issue has been addressed by courts in other states and the federal system, and the type of analysis that New York courts should undertake in sex offender civil management trials to determine whether to permit such expert opinion and the bases that formed such opinion.
The bench ordered the ECP to depute an officer to conduct inquiry and submit report and sanding of relevant documents and academic degree to the HEC for expert opinion regarding their genuineness and that it was equivalent to a bachelor's degree.
Get an expert opinion in a fun way on your Love life, Financial Issues, Education, Friends, Family or Work.
It's important that we get the best opinion possible and indicate that it is expert opinion and not based on the results of a randomized, controlled trial.
The NICE guidelines are derived from systematic reviews, supplemented, when minimal evidence is available, with recommendations based on expert opinion.
For example, discussions on our Web site and The Pulse-the recently launched blog where you can read up-to-the-minute expert opinion and comment on topics that affect schools-prompt ed us to invite David Thornburg to write an opinion column on "Free and Open Source Software" in this issue.
Expert opinion, in the form of opinion from a preeminent authority or consensus from a group of authorities, constitutes level 5 evidence.
Meyer, consultations can be used to get an expert opinion on a variety of topics including space planning, furniture placement, suggestions for future furniture purchases and paint selection.
In many cases, the expert opinion held with regard to any given situation was that "it couldn't be done.

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