Voir Dire (Expert Qualification)
Definition
A preliminary hearing in adversarial legal systems in which counsel from both sides question a proposed expert witness before the judge rules on whether the witness is qualified and whether the evidence is admissible. In media authentication cases, voir dire often focuses on the examiner's training and the validation status of their tools.
- Setting
- Preliminary hearing before an expert testifies
- Legal systems
- Adversarial systems, e.g. common law jurisdictions
- Decided by
- The judge
- Outcome
- Rules on qualification and admissibility
- Focus in media cases
- Examiner's training and tool validation status
Common questions
What can opposing counsel actually challenge during this voir dire?+
Counsel can probe the witness's credentials, relevant experience, the methodology used, whether the method and any tools applied are validated and generally accepted, and whether the expert's conclusions stay within the limits the methodology actually supports.
Does surviving voir dire mean the expert's later testimony cannot be challenged again at trial?+
No. Voir dire settles whether the witness may testify as an expert and whether the evidence is admissible at all. Cross-examination on the substance and weight of the expert's actual opinions still happens in front of the jury or trier of fact afterward.
Related terms
- Bharatiya Sakshya Adhiniyam 2023 (BSA)
- India’s evidence statute operative from 1 July 2024, with savings for specified existing proceedings. Section 39 concerns expert opinion, section 45 its...
- Daubert Standard
- The US expert-evidence framework associated with Daubert v. Merrell Dow Pharmaceuticals and subsequent decisions, applied alongside Federal Rule of Evidence 702. Testing,...
- Error Rate Disclosure
- The obligation, particularly under Daubert, for an expert to state the known or estimated false positive and false negative rate of their...
- Frye Standard
- A general-acceptance approach to scientific-evidence admissibility derived from Frye v. United States. Its use and details depend on the jurisdiction and relevant...
- Limiting Instruction
- A direction given by a judge to the jury explaining the restricted purpose for which a piece of evidence may be considered....