AI in Judicial EducationExploratory Project
Article VII. Opinions and Expert Testimony

Rule 703. Bases of an Expert’s Opinion Testimony

Effective January 1, 2014

See Rule 703 on the heat map

An expert may base an opinion on facts or data in the case that the expert has been made aware of or personally observed. Experts may testify to opinions based on inadmissible evidence, provided that it is of the type reasonably relied upon by experts in the field.

Opinions in this dataset that cite Rule 703

1 opinion in the dataset cite this rule, reversals first. Matched from each opinion’s coded issue, not from a reading of the opinion.

Reporter citations are as supplied and unverified; the official opinion link is the source of record.

Source: the Indiana Rules of Evidence, reproduced for browsing. Rule text as supplied, including the amendment to Rule 103(b) effective July 1, 2026 (Order, Cause No. 26S-MS-8); other rules carry their own effective dates. This is an unofficial copy; check the official text before relying on it. Not legal advice.