Expert testimony/witnesses are defined as testimony from people who are recognized experts in their fields such as?

• A. Doctors, psychologists, nurses
• B. Police officers
• C. Friends of the victim
• D. Security personnel

Answer: (A)

Expert testimony relies on specialized knowledge gained through education, training, and experience that helps the fact-finder understand issues beyond ordinary experience. Doctors, psychologists, and nurses are classic examples because their fields require formal training and ongoing expertise in medical conditions, mental health, patient care, and related standards of practice. They can offer opinions on diagnoses, causation, or the standard of care—areas where laypersons wouldn’t normally have enough knowledge to assess accurately.

A police officer typically testifies about what they observed or did in the field, which is usually lay testimony unless they have specialized training in a particular area such as forensics or accident reconstruction. Friends of the victim or security personnel are not considered experts unless they possess relevant specialized training.