Criminal Justice Dual Credit Practice Test

The essential idea here is understanding the distinction between the physical act of committing a crime and the mental state behind it. The term for the physical act is actus reus—the actual conduct that breaches the law, such as taking property or striking someone, or a lawful omission in cases where a duty to act exists. This is why it’s described as the “guilty act” that must be proven to hold someone legally responsible. Mens rea, on the other hand, refers to the mindset or intention behind the act—criminal intent, knowledge, recklessness, or negligence. Both actus reus and mens rea are typically needed to establish liability for many crimes. Corpus delicti means the body of the crime—the facts proving that a crime occurred—rather than the act itself. Indicia are signs or pieces of evidence pointing to criminal activity, not the formal label for the act. So, the physical act of committing a crime is described by actus reus.