Alabama |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Alaska |
The state uses a modified version of the M'Naghten Rule. The burden of proof is on the defendant. A guilty but mentally ill verdict is allowed. |
Arizona |
The state uses a modified version of the M'Naghten Rule. The burden of proof is on the defendant. A guilty but insane verdict is allowed. |
Arkansas |
The state uses a modified version of the Model Penal Code rule. The burden of proof is on the defendant. |
California |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Colorado |
The state uses a modified version of the M'Naghten Rule with the Irresistible Impulse Test. The burden of proof is on the state. |
Connecticut |
The state uses a modified version of the Model Penal Code rule. The burden of proof is on the defendant. |
Delaware |
The state uses a modified version of the Model Penal Code rule. The burden of proof is on the defendant. |
District of Columbia |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Florida |
The state uses the M'Naghten Rule. The burden of proof is on the state. |
Georgia |
The state uses a modified version of the M'Naghten Rule. The burden of proof is on the defendant. A guilty but mentally ill verdict is allowed. |
Hawaii |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Idaho |
The state has abolished the insanity defense. The state allows a guilty but insane verdict. |
Illinois |
The state uses a modified version of the Model Penal Code rule. The burden of proof is on the defendant. |
Indiana |
The state uses a modified version of the Model Penal Code rule. The burden of proof is on the defendant. |
Iowa |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Kansas |
The state has abolished the insanity defense. |
Kentucky |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Louisiana |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Maine |
The state uses a modified version of the Model Penal Code rule. The burden of proof is on the defendant. |
Maryland |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Massachusetts |
The state uses the Model Penal Code rule. The burden of proof is on the state. |
Michigan |
The state uses the Model Penal Code rule. The burden of proof is on the state. |
Minnesota |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Mississippi |
The state uses the M'Naghten Rule. The burden of proof is on the state. An acquitted by reason of insanity verdict is allowed. |
Missouri |
The state uses a modified version of the M'Naghten Rule. The burden of proof is on the defendant. |
Montana |
The state has abolished the insanity defense, although a guilty but insane verdict is allowed. |
Nebraska |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Nevada |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
New Hampshire |
The state uses the Durham standard. The burden of proof is on the defendant. |
New Jersey |
The state uses the M'Naghten Rule. The burden of proof is on the state. |
New Mexico |
The state uses the M'Naghten Rule with the Irresistible Impulse Test. The burden of proof is on the state. |
New York |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
North Carolina |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
North Dakota |
The state uses the Model Penal Code rule. The burden of proof is on the state. |
Ohio |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Oklahoma |
The state uses the M'Naghten Rule. The burden of proof is on the state. |
Oregon |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Pennsylvania |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Rhode Island |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
South Carolina |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
South Dakota |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
Tennessee |
The state uses the Model Penal Code rule. The burden of proof is on the state. |
Texas |
The state uses the M'Naghten Rule with the Irresistible Impulse Test. The burden of proof is on the defendant. |
Utah |
The state has abolished the insanity defense, but guilty but mentally ill verdicts are allowed. |
Vermont |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Virginia |
The state uses the M'Naghten Rule with the Irresistible Impulse Test. The burden of proof is on the defendant. |
Washington |
The state uses the M'Naghten Rule. The burden of proof is on the defendant. |
West Virginia |
The state uses the Model Penal Code rule. The burden of proof is on the state. |
Wisconsin |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |
Wyoming |
The state uses the Model Penal Code rule. The burden of proof is on the defendant. |