Testimony by Witnesses and Legal Experts in a Court of Law

Courtroom and gavel

What is Testimony?

Legal testimony – legal testimony is a form of evidence that is obtained from a witness who makes a solemn statement or declaration of fact. Testimony may be oral or written, and it is usually made by oath or affirmation under penalty of perjury. Unless a witness is testifying as an expert witness, testimony in the form of opinions or inferences is generally limited to those opinions or inferences that are rationally based on the perceptions of the witness and are helpful to a clear understanding of the witness’ testimony.

Expert testimony – An expert witness provides their opinion about facts and conclusions within their field of expertise.

Private investigators are sometimes called upon to testify in a court of law. They may be summoned to provide evidence and testimony regarding information they uncovered during the course of an investigations. Private eyes find themselves testifying in court in relation to divorce investigations and marital infidelity.

More Information

For more legal definitions, visit our Glossary of Legal and Investigation Terms.


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