A witness who helps the jury understand technical evidence is called what?

• A. Lay Witness
• B. Character Witness
• C. Expert Witness
• D. Percipient Witness

Answer: (C)

Understanding who helps a jury interpret technical evidence rests on recognizing different witness roles. An expert witness is someone qualified by education, training, or experience to offer opinions and interpret complex or specialized information. Their explanations translate advanced methods, data, or findings into understandable terms, aiding the jury in applying the evidence to the facts in issue. This is allowed when the information would be beyond common knowledge and is relevant to proving or disproving a fact.

In contrast, lay or percipient witnesses describe what they personally saw, heard, or experienced and may relay basic facts or perceptions without interpreting technical details. Character witnesses speak to a person’s character rather than the technical matter at hand. So, when the question asks for the witness who helps the jury understand technical evidence, the best fit is an expert witness.