Which insanity test used by the Model Penal Code combines M'Naghten and Irresistible Impulse?

Which insanity test used by the Model Penal Code combines M'Naghten and Irresistible Impulse?

• A. M'Naghten test
• B. Irresistible Impulse test
• C. Durham rule
• D. Model Penal Code test combining M'Naghten and Irresistible Impulse

Answer: (D)

The question centers on how insanity standards are defined in the Model Penal Code. The Model Penal Code adopts a substantial capacity approach, meaning a defendant is not responsible if, because of a mental disease or defect, they lack substantial capacity to either appreciate the wrongfulness of their conduct or to conform their conduct to the requirements of the law. This wording explicitly blends elements from two classic tests. It incorporates the cognitive aspect of M'Naghten—recognizing wrongfulness—along with a volitional element akin to Irresistible Impulse—focusing on the ability to control conduct. By tying the lack of substantial capacity to both understanding and self-control, the MPC creates a combined standard rather than relying on either test alone. So the correct choice represents the Model Penal Code approach that merges M'Naghten and Irresistible Impulse. The other standards are narrower: M'Naghten focuses only on knowing right from wrong, Irresistible Impulse focuses only on inability to control actions, and the Durham rule centers on a broader mental disease connection without tying it to a specific capacity to understand or control.

The question centers on how insanity standards are defined in the Model Penal Code. The Model Penal Code adopts a substantial capacity approach, meaning a defendant is not responsible if, because of a mental disease or defect, they lack substantial capacity to either appreciate the wrongfulness of their conduct or to conform their conduct to the requirements of the law.

This wording explicitly blends elements from two classic tests. It incorporates the cognitive aspect of M'Naghten—recognizing wrongfulness—along with a volitional element akin to Irresistible Impulse—focusing on the ability to control conduct. By tying the lack of substantial capacity to both understanding and self-control, the MPC creates a combined standard rather than relying on either test alone.

So the correct choice represents the Model Penal Code approach that merges M'Naghten and Irresistible Impulse. The other standards are narrower: M'Naghten focuses only on knowing right from wrong, Irresistible Impulse focuses only on inability to control actions, and the Durham rule centers on a broader mental disease connection without tying it to a specific capacity to understand or control.