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Indiana legal term

mental disease or defect in Indiana Criminal Law

Current through 2026 Indiana legislative session

In Indiana criminal law, “mental disease or defect” is a term defined by statute rather than by its everyday meaning. Its statutory definition — quoted verbatim below — controls how the term is applied throughout the Indiana criminal code.

What does “mental disease or defect” mean in Indiana criminal law?

"mental disease or defect" means a severely abnormal mental condition that grossly and demonstrably impairs a person's perception, but the term does not include an abnormality manifested only by repeated unlawful or antisocial conduct. (Ind. Code § 35-41-3-6)

Statutes defining or using this term

Related terms in the same statutes

This reference is informational and is not legal advice.