Cross-examination of an expert witness is a common technique used by legal counsel to discredit the testimony provided by an expert witness. Expert witnesses may be cross-examined on a variety of issues such as their experience in their chosen field, the methods used to reach their conclusions or any prior inconsistent statements made by the expert. One area of cross-examination recently considered by Canadian courts is whether expert witnesses can be cross-examined on adverse findings of credibility which were made in prior judicial hearings.
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