Which insanity standard asserts that a defendant can be not guilty if they could not control their actions due to a mental condition?

Which insanity standard asserts that a defendant can be not guilty if they could not control their actions due to a mental condition?

• A. Substantial capacity test
• B. Irresistible impulse test
• C. M'Naghten test
• D. Duress

Answer: (B)

The irresistible impulse standard is about an inability to control one’s actions due to a mental condition. It says that even if a person understands what they’re doing and knows it’s wrong, they can be not guilty if their mental illness prevents them from resisting the impulse to commit the act. This focuses on volitional impairment—the power to choose to refrain from the conduct is itself compromised. This fits the prompt because it directly addresses not being able to control behavior because of a mental state. By contrast, the M’Naghten standard centers on knowledge of the act and whether the person knew it was wrong, not on impulse control. The substantial capacity (Model Penal Code) standard blends cognitive and volitional aspects but isn’t as tightly focused on pure inability to control actions as irresistible impulse. Duress involves external threats and coercion, not a mental condition that impairs control.

The irresistible impulse standard is about an inability to control one’s actions due to a mental condition. It says that even if a person understands what they’re doing and knows it’s wrong, they can be not guilty if their mental illness prevents them from resisting the impulse to commit the act. This focuses on volitional impairment—the power to choose to refrain from the conduct is itself compromised.

This fits the prompt because it directly addresses not being able to control behavior because of a mental state. By contrast, the M’Naghten standard centers on knowledge of the act and whether the person knew it was wrong, not on impulse control. The substantial capacity (Model Penal Code) standard blends cognitive and volitional aspects but isn’t as tightly focused on pure inability to control actions as irresistible impulse. Duress involves external threats and coercion, not a mental condition that impairs control.