Cook Illinois Jury Instruction — Insanity is a legal instruction given to the jury in criminal trials regarding the defense of insanity. This instruction outlines the criteria and guidelines for determining whether a defendant can be held criminally responsible due to mental illness or insanity at the time of the offense. In Cook County, Illinois, where this jury instruction is applicable, there are several types of instructions related to insanity defense that may be given to the jury, depending on the circumstances of the case. These include: 1. Cook Illinois Jury Instruction — Insanity Test: This instruction explains the test used to evaluate a defendant's mental state at the time of the offense. It typically refers to the McNaughton Rule or a variant of it, which is widely recognized in many jurisdictions. Under this rule, a defendant can be found "not guilty by reason of insanity" if they were unable to understand the nature or wrongfulness of their actions due to a mental disease or defect. 2. Cook Illinois Jury Instruction — Voluntary Intoxication and Insanity: This instruction addresses cases where the defense of insanity is raised alongside voluntary intoxication. It specifies that a defendant cannot claim insanity solely due to being intoxicated unless the evidence shows that their mental illness existed independently of alcohol or drug consumption. 3. Cook Illinois Jury Instruction — Diminished Capacity: In some cases, the defense team may argue for a diminished capacity defense instead of a complete insanity defense. This instruction explains that even if the defendant does not meet the threshold for the insanity defense, evidence of mental illness or impairment at the time of the offense can be considered when determining whether they possessed the necessary mental state for a particular crime. 4. Cook Illinois Jury Instruction — Burden of Proof: This instruction clarifies the burden of proof for the defense and the prosecution regarding the issue of insanity. It explains that the defense has the burden to prove by a preponderance of the evidence that the defendant was insane at the time of the offense. The prosecution, on the other hand, bears the burden of proving all other elements of the crime beyond a reasonable doubt. In conclusion, Cook Illinois Jury Instruction — Insanity provides a comprehensive guideline for juries in Cook County when evaluating the defense of insanity in criminal trials. By considering the mental state of the defendant at the time of the offense, assessing evidence of mental illness, and understanding the burden of proof, the jury is responsible for determining whether the defendant should be held criminally responsible or acquitted due to insanity.