Allegheny Pennsylvania Jury Instruction — Insanity is a legal instruction provided to jurors in Allegheny County, Pennsylvania, for cases involving defendants who claim the defense of insanity. The instruction helps jurors understand the specific criteria and standards they should consider when determining the mental state of the accused during the commission of the crime. One type of Allegheny Pennsylvania Jury Instruction — Insanity is known as thHeighteneden rule. According to this rule, a defendant can be found not guilty by reason of insanity if, at the time of committing the crime, they were suffering from such a defect of reason, from a disease of the mind, that they did not know the nature and quality of the act they were doing, or if they did know it, they did not know it was wrong. Another type of instruction related to insanity in Allegheny Pennsylvania is the Durham rule. This rule states that a defendant may be found not guilty by reason of insanity if their unlawful act was the product of a mental disease or defect. In addition to the M'Heighten and Durham rules, Allegheny Pennsylvania may also provide instructions related to the irresistible impulse test. This test considers whether the defendant's mental disease or defect caused an uncontrollable impulse to commit the crime, making it impossible for them to conform their behavior to the law. Furthermore, jurors may receive instructions on the burden of proof regarding the insanity defense. The prosecution has the burden to prove the defendant's sanity beyond a reasonable doubt. If the defense presents evidence of insanity, the burden then shifts to the prosecution to rebut this evidence and prove the defendant's sanity. During deliberations, when considering the insanity defense, jurors must carefully assess the evidence and testimony presented, as well as any expert opinions by psychiatrists or psychologists. They are instructed to base their decision on the preponderance of the evidence, weighing whether it is more likely than not that the defendant was legally insane at the time of the offense. It is crucial for jurors to follow the Allegheny Pennsylvania Jury Instruction — Insanity closely, as it provides the necessary guidelines for evaluating the defendant's mental state and determining their capacity to understand the nature and consequences of their actions. Overall, Allegheny Pennsylvania Jury Instruction — Insanity ensures that jurors are well-informed and equipped to make fair and just decisions in cases where the defense of insanity is raised.