Cautionary Instruction Similar Acts Evidence (Rule 404(b), Fed. R. Evil.) is a type of evidence that is used in criminal trials to show that the defendant has a propensity to commit certain kinds of crimes or to show that the defendant has a bad character. This type of evidence is not allowed to be used to prove that the defendant committed the crime in question, but rather, it is used to show that the defendant had a motive or intent to commit the crime. The rule of evidence states that the defendant must be given a cautionary instruction by the judge that the evidence cannot be used to prove guilt, and that the jury is not to consider the evidence in determining whether the defendant is guilty or not. There are two types of similar acts evidence that can be used under the rule: 1. Character Evidence: This type of evidence is used to show that the defendant has a propensity to commit certain kinds of crimes or to show that the defendant has a bad character. 2. Habitual Acts Evidence: This type of evidence is used to show that the defendant has a pattern of behavior that is similar to the behavior that is alleged in the crime. It can also be used to show that the defendant had the motive or intent to commit the crime in question. In summary, Cautionary Instruction Similar Acts Evidence (Rule 404(b), Fed. R. Evil.) is a type of evidence that is used in criminal trials to show that the defendant has a propensity to commit certain kinds of crimes or to show that the defendant has a bad character. It is not allowed to be used to prove that the defendant committed the crime in question, but rather, it is used to show that the defendant had a motive or intent to commit the crime. The defendant must be given a cautionary instruction by the judge that the evidence cannot be used to prove guilt, and that the jury is not to consider the evidence in determining whether the defendant is guilty or not. There are two types of similar acts evidence that can be used under this rule: character evidence and habitual acts evidence.