Oklahoma Proof of Malice Aforethought is a legal concept that is used in the state of Oklahoma to determine whether a defendant intends to cause serious injury or death. It is used to determine whether the defendant acted with malice aforethought, which is an element of certain criminal offenses, such as first-degree murder. Oklahoma Proof of Malice Aforethought consists of three types: deliberate intention, depraved heart, and extreme recklessness. Deliberate intention is when the defendant intended to kill or seriously injure the victim. Depraved heart is when the defendant acted with a reckless disregard for human life and knew that their actions had a high probability of resulting in death or serious injury. Extreme recklessness is when the defendant acted with an extreme disregard for the safety of the victim and knew that their actions had a high probability of resulting in death or serious injury.