Questioning expert witnesses’ expertise or incentives is fair game in cross-examination

Evidence

Another proper use of the ad hominem is in receiving expert witness testimony where the witness simply states a conclusion after establishing the predicate facts. It is fair game to attack these witnesses by questioning their expertise or incentives for testifying. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1052

Categorization

• XREF: Relevant to expert witness examination and evidence law.
• corroborated: 2 independent passages support this claim — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1052