Which defense asserts the defendant did not have the mental capacity to understand the wrongdoing of their conduct?

• A. Infancy
• B. Diminished Mental Capacity
• C. Alibi
• D. Self-Defense

Answer: (B)

The concept being tested is how mental-state defenses address whether a defendant understood the wrongdoing or could form the required intent. The defense of diminished mental capacity argues that the defendant’s mental condition at the time of the act prevented them from understanding that what they were doing was wrong and/or from forming the specific intent the crime requires. This focuses on cognitive capacity and the mens rea element, not on whether the act occurred.

This differs from infancy, which relies on age and the presumption about capacity due to being a child; alibi, which concerns whether the defendant was actually at the scene; and self-defense, which justifies the conduct as necessary to prevent harm rather than addressing mental state.