Mens rea

DEFINITION: Latin term for the state of mind, or intent, of a person at the moment the person performs a criminal act.

SIGNIFICANCE: The concept behind mens rea is central to the notion that because people have free will they are legally responsible for acts they intend to commit. If intent is absent from the act, there is no crime. It is thus the burden of the prosecution to find evidence that proves the intent behind criminal actions. Proving intent is especially important in cases relating to crimes such as murder and arson.

Under most laws in the United States, the intent of those who commit criminal acts must be proven in order for courts to convict them. Without intent, there is no crime or violation of the law; however, criminal negligence may be an exception to the intent rule. The American system of law is predicated on the concept of free will: When persons committing crimes do so of their own free will, there is intention to commit the acts. The Latin phrase that describes the “guilty act” is actus reus. The law demands that mens rea and actus reus must be coupled for there to be a crime.

89312269-74000.jpg

Of several different types of criminal intent, the most frequently encountered is general intent. General intent is implied by an individual committing a criminal act. For example, a person walks into a store, takes an item, and leaves the store without paying for it; this act (actus reus) is defined as a theft, one generally classified as shoplifting. The fact that the item has been taken implies that the person intended to take it. The intent to steal is thus implied by the mere act of stealing itself.

Another type of intent, one that must be proved by the prosecution, is specific intent. Burglary is an example of a type of crime that requires proof of a specific intent to steal or commit a felony. If a person enters a store wearing a long coat with numerous pockets sewn inside and fills the pockets with items removed from the store and leaves without paying, that person has committed a burglary. The coat is designed for the single purpose of secreting items so that the wearer may remove them from the store without paying for them (actus reus). Wearing a coat specifically designed to secrete items in the store shows a specific intent to steal, the requisite mens rea required for burglary, a specific-intent crime.

Conditions that mitigate intent include mental impairment and mistake. For example, a person who is mentally incompetent to form the requisite intent is likely not to be held responsible for what otherwise would be a criminal act. Although there may be the presence of actus reus, there is an absence of mens rea; therefore, no crime has been committed. Such incompetence must be established using diagnostic tools. Likewise, a mistake can legitimately negate intent. For example, a person who enters a parking lot and gets into another person’s car by mistake is not guilty of attempted car theft because there is no intent to steal or to tamper with another’s vehicle.

Bibliography

Alexander, Larry, and Kimberly D. Kessler. “Mens Rea and Inchoate Crimes.” Journal of Criminal Law and Criminology 87.4 (1997): 1138–1193. Print.

Dubber, Markus Dirk, and Tatjana Hörnle. The Oxford Handbook of Criminal Law. New York: Oxford UP, 2014 Print.

Gonzalez, Jorge C. “Punishing the Causer as the Principal: Mens Rea and the Interstate Transportation Element of the National Stolen Property Act.” San Diego Law Review 38.2 (2001): 629. Print.

Katz, Leo. Bad Acts and Guilty Minds. Chicago: U of Chicago P, 1987. Print.

Moore, Michael S. Act and Crime: The Philosophy of Action and Its Implications for Criminal Law. New York: Oxford UP, 1993. Print.

Wood, Mary E., Kimberly P. Brown, Amanda R. Bitting, Christopher Slobogin, and Brooke Bowerman. "Legal Admissibility of the Competence Assessment for Standing Trial for Defendants with Mental Retardation (CAST-MR)." Journal of Personality Assessment, vol. 104, no. 2, 2022, pp. 289-301, doi: 10.1080/00223891.2021.1951742. Accessed 16 Aug. 2024.