What is required for an expert to testify?

What is required for an expert to testify?

• A. The witness may testify as an expert if they are qualified by specialized knowledge, and the testimony is based on reliable information.
• B. The witness may testify as an expert only if they have formal licensing.
• C. The witness may testify as an expert if they have practical experience, even without qualifications.
• D. The witness may testify as an expert if the judge approves regardless of qualifications.

Answer: (A)

Expert testimony hinges on two key ideas: the witness must be qualified by specialized knowledge, training, education, or experience in the relevant field, and the opinion must be based on reliable information—data and methods that are properly applied to the facts of the case. Licensing isn’t required in general, and simply having practical experience doesn’t automatically make someone an acceptable expert if that experience isn’t tied to recognized, reliable methods. While the judge controls admissibility, that gatekeeping role doesn’t override the need for clear qualification and reliable basis for the expert’s conclusions.

Expert testimony hinges on two key ideas: the witness must be qualified by specialized knowledge, training, education, or experience in the relevant field, and the opinion must be based on reliable information—data and methods that are properly applied to the facts of the case. Licensing isn’t required in general, and simply having practical experience doesn’t automatically make someone an acceptable expert if that experience isn’t tied to recognized, reliable methods. While the judge controls admissibility, that gatekeeping role doesn’t override the need for clear qualification and reliable basis for the expert’s conclusions.