In criminal law, the sleepwalking defense is applicable to which type of crimes?

• A. Applies to all crimes
• B. Applies to nonviolent offenses
• C. Applies to certain crimes requiring mens rea
• D. Applies to civil offenses

Answer: (C)

Sleepwalking defense relies on automatism: if a person acts while unconscious, they may not form the mental state required to be guilty. In criminal law, most crimes require a mental state (mens rea) such as intention, knowledge, recklessness, or negligence. If someone is sleepwalking, they might not have formed that mens rea for the act, so the defense can negate the necessary mental element. However, this doesn’t apply to offenses that don’t require any mens rea (strict liability) or to civil matters, where no criminal liability is at stake. So the defense is available only for certain crimes that require a mental state.