CFN Legal Testimony & Expert Witness Responsibilities 2 — Questions and Answers
Question 1: During cross-examination, a defense attorney asks a forensic nurse to speculate beyond her documented findings. What is the most appropriate response?
- Provide the speculation to avoid appearing uncooperative
- State 'that is outside the scope of my findings' and decline to speculate (Correct answer)
- Defer to the prosecuting attorney before answering
- Request a recess to consult with the medical examiner
Correct answer: State 'that is outside the scope of my findings' and decline to speculate
Expert witnesses must confine testimony to their area of expertise and documented findings, refusing to speculate beyond the evidence.
Question 2: A forensic nurse is asked to testify about the cause of a patient's injuries. In which capacity is she most likely serving?
- Fact witness
- Character witness
- Expert witness (Correct answer)
- Lay witness
Correct answer: Expert witness
A forensic nurse applying specialized knowledge to interpret injury causation is serving as an expert witness, not a lay or fact witness.
Question 3: What does the Frye standard require before expert scientific testimony is admitted in court?
- The expert must hold a doctoral degree
- The scientific method must be generally accepted within the relevant scientific community (Correct answer)
- The testimony must be corroborated by at least two other experts
- The findings must have been published in a peer-reviewed journal
Correct answer: The scientific method must be generally accepted within the relevant scientific community
The Frye standard (general acceptance test) requires that the scientific technique be generally accepted by the relevant professional community.
Question 4: When a forensic nurse submits a written expert report before trial, which content element is most critical?
- A biography of the nurse's entire career
- A clear statement of opinions and the basis for each opinion (Correct answer)
- The names of other expert witnesses in the case
- A prediction of the opposing expert's counterarguments
Correct answer: A clear statement of opinions and the basis for each opinion
Expert reports must clearly articulate each opinion and the factual and scientific basis supporting it, per Federal Rule of Civil Procedure 26.
Question 5: A forensic nurse testifying as an expert witness mentions a study during direct examination. On cross-examination, the opposing attorney questions the study's validity. What should the nurse do?
- Withdraw the reference to avoid controversy
- Acknowledge limitations while explaining why the study remains relevant to the opinion (Correct answer)
- Refuse to discuss the study further without the full text present
- Ask the judge to strike the cross-examination question
Correct answer: Acknowledge limitations while explaining why the study remains relevant to the opinion
An expert witness should transparently acknowledge a study's limitations while defending its relevance to maintain credibility.
Question 6: Which of the following best describes 'voir dire' as it applies to an expert witness?
- The expert's oath sworn before testifying
- A preliminary examination by attorneys to qualify the expert before the jury hears testimony (Correct answer)
- A written deposition taken before trial
- The judge's review of the expert's written report
Correct answer: A preliminary examination by attorneys to qualify the expert before the jury hears testimony
Voir dire in this context is the court's process of questioning a proposed expert to determine whether they are qualified to testify as an expert.
Question 7: A forensic nurse expert is retained by the defense. How should her testimony differ from that of a nurse retained by the prosecution?
- She should slant her opinion to favor the defense's position
- She must testify only to opinions favorable to the defense
- Her testimony should be the same objective, evidence-based opinion regardless of which side retained her (Correct answer)
- She may omit findings that would harm the defense
Correct answer: Her testimony should be the same objective, evidence-based opinion regardless of which side retained her
Expert witnesses owe their duty of honesty to the court, not to the retaining party, and must provide objective, unbiased opinions.
CFN Legal Testimony & Expert Witness Responsibilities 2
During cross-examination, a defense attorney asks a forensic nurse to speculate beyond her documented findings.
What is the most appropriate response?