The lack of personal knowledge rule (602(A)) is subject to the provisions of which rule, relating to opinion testimony by expert witnesses?

The lack of personal knowledge rule (602(A)) is subject to the provisions of which rule, relating to opinion testimony by expert witnesses?

• A. Rule 702
• B. Rule 704
• C. Rule 705
• D. Rule 703

Answer: (D)

When a witness is an expert, their opinion isn’t limited to things they personally observed; it can be based on data and facts in the case—or on other information that experts in the field reasonably rely upon to form opinions. This is governed by Rule 703. Rule 703 lets an expert base an opinion on facts or data in the case and on other information reasonably relied upon by experts in the field, even if that data isn’t itself admitted as evidence. It also explains how the underlying data may be disclosed to the jury or kept out, depending on what’s appropriate. So, the rule that governs how lack of personal knowledge interacts with expert opinion testimony is Rule 703.

When a witness is an expert, their opinion isn’t limited to things they personally observed; it can be based on data and facts in the case—or on other information that experts in the field reasonably rely upon to form opinions. This is governed by Rule 703. Rule 703 lets an expert base an opinion on facts or data in the case and on other information reasonably relied upon by experts in the field, even if that data isn’t itself admitted as evidence. It also explains how the underlying data may be disclosed to the jury or kept out, depending on what’s appropriate. So, the rule that governs how lack of personal knowledge interacts with expert opinion testimony is Rule 703.