Pennsylvania
How Durham v. United States applies in Pennsylvania: state-specific rules, key cases, and bar exam notes for Criminal Law.
Pennsylvania predominantly follows the Model Penal Code standard for insanity defense rather than the Durham rule. This reflects a more modern understanding of mental illness in evaluating a defendant's culpability.
In Pennsylvania, the standard to establish insanity is that the defendant, due to a severe mental disease or defect, lacked substantial capacity to appreciate the criminality of their conduct or to conform their conduct to the requirements of the law (18 Pa.C.S. § 315).
The court found that the defendant's mental health issues did not meet the criteria for the insanity defense under current Pennsylvania law.
The ruling emphasized the importance of the defendant's capability to discern right from wrong at the time of the offense.
The court addressed the nuances of expert testimony regarding mental health in determining insanity.
While federal law historically relied on the Durham Rule, it has shifted towards a standard similar to that of Pennsylvania through the Insanity Defense Reform Act, focusing on whether the defendant had the mental capacity to understand the criminality of their actions. Pennsylvania’s approach mirrors this by requiring a substantial capacity test.
Understanding the state's approach to insanity is crucial for the Pennsylvania bar exam, as it may be tested under criminal law topics related to defenses.