Cross-Examination Evidence Expert Testimony 
Evidence at Trial
SEPTEMBER 9, 2021
What is inadmissible character evidence (Rule 404(a)) to one judge might be admissible "other acts" evidence (Rule 404(b)) to another. And when it comes to expert opinion testimony, there can be even more uncertainty. The Court held that the Frye test was superseded by the adoption of the Federal Rules of Evidence.
Temple University Beasley School of Law - Advocacy
JUNE 2, 2024
To ensure there is a foundation for the opinion rather than mere speculation, there is the testing device of cross-examination. But lay witnesses may not cross a line and give testimony that is “based on scientific, technical, or other specialized knowledge within the scope of Rule 702.” The line is ill-defined.
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