Criminal Law I Lecture II: Actus Reus PDF
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University of the West Indies, Cave Hill
Dr. Janeille Zorina Matthews
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Summary
A lecture detailing the elements of a crime, focusing on Actus Reus. The lecture covers important themes in criminal law, including acts of commission and omission, intent, and defenses. The document also contains case law referenced.
Full Transcript
Criminal Law I Lecture II: Elements of a Crime: Actus Reus By: Dr. Janeille Zorina Ma1hews ...
Criminal Law I Lecture II: Elements of a Crime: Actus Reus By: Dr. Janeille Zorina Ma1hews Introduc8on Nature of an Sa8sfying Actus Sa8sfying Actus Introduc8on Reus: Voluntary Causa8on Actus Reus Reus: Proof Conduct Lecture I summary Important themes in criminal law Three components of criminal liability 2 Introduc8on Important Themes in Criminal Law q ACT V. OMISSION: How much conduct is enough? When is failure to act enough? When should accomplices/conspirators be held criminally liable? q CONDUCT V. INTENT: What mental state ought to be required to send someone to prison? q PRIMACY OF INTENT: What is the relaRonship between intent and moRve? q DEFENCES: If there is liability, when should we give people a defence? 3 Introduc8on “An act does not make a man guilty of a crime, unless his mind is also guilty.” -‐-‐Haughton v. Smith AC 476 at 491 Three Components of Criminal Liability Actus Reus Mens Rea No Defence The actual The criminal state The absence of an criminal act – the of mind – the exculpatory defence, conduct intent jusRficaRon or excuse The conduct must The intent may Where a defence is be proven be inferred raised, the prosecuRon must negate it by proof beyond reasonable doubt 4 Nature of an Actus Reus Sa8sfying Actus Nature of an Sa8sfying Actus Introduc8on Reus: Voluntary Causa8on Actus Reus Reus: Proof Conduct Actus Reus defined Act/conduct requirement Acts of omission Status offences 5 Nature of an Actus Reus ACTUS REUS (ˈæktəs ˈreɪəs) An act, omission or state of affairs indicated in the definiRon of the offence charged, together with any consequences of that act, and any surrounding circumstances, which are indicated by that definiRon 6 Nature of an Actus Reus Act/Conduct Requirement Proscribed conduct may include: 1. Acts of commission 2. Acts of omission 3. States of being 7 Nature of an Actus Reus Criminal Liability for Acts of Omission Instances in which there is a duty to act: 1. Contractual duty 2. Statutory duty 3. CreaRng a dangerous situaRon 4. Special relaRonship 5. Voluntary undertaking of care for those unable to care for themselves 8 Nature of an Actus Reus Criminal Liability for Acts of Omission Criminal liability for acts of omission is about RELIANCE and CHOICE 9 Nature of an Actus Reus Criminal Liability for Situa?onal Crimes States of Affairs The defendant neither performed any act nor failed to act where she had a duty to do so 10 Sa8sfying the Actus Reus Sa8sfying Actus Sa8sfying Actus Introduc8on Nature of an Causa8on Reus: Proof Reus: Voluntary Actus Reus Conduct The actus reus must be proved Important case law 11 Proof The Actus Reus Must Be Proved The prosecu8on must prove: ➭ The act, omission or state of affairs; ➭ Any consequences of the act; and ➭ Any surrounding circumstances, which are indicated by that definiRon 12 Voluntary Conduct Sa8sfying Actus Sa8sfying Actus Introduc8on Nature of an Causa8on Reus: Proof Reus: Voluntary Actus Reus Conduct The act must be voluntary AutomaRsm 13 Voluntary Conduct The Conduct Must Be Voluntary When is an act voluntary? When it results from an exercise of the will. Where there are no: Ø Physically coerced movement Ø Reflex movements Ø Paralysis/Seizures arising from diseases Ø Unconsciousness 14 Voluntary Conduct AUTOMATISM (ôˈtäməˌRzəm) The state in which an act is done by the muscles without any control by the mind (such as a reflex acRon, or a spasmodic or convulsive act) or if it is done during a state involving a loss of consciousness 15 Voluntary Conduct Sane or Insane Automa?sm? Important ques8on: How did the automa8sm arise? ➭ If it arose from a disease of the mind, the defendant is not guilty by reason of insanity ➭ If it arose from any other cause the defendant is simply not guilty 16 Causa8on Sa8sfying Actus Sa8sfying Actus Introduc8on Nature of an Causa8on Reus: Proof Reus: Voluntary Actus Reus Conduct How do we determine causaRon? Factual causaRon Legal causaRon General principles of causaRon ImplicaRons 17 Causa8on How do we determine causa?on? How do we prove that the result was a consequence of the defendant’s acRons? 1. Factual causaRon 2. Legal causaRon 18 Causa8on Factual Causa?on The but for test: always ask, "but for the defendant’s conduct, would the harmful consequence have happened when and how it did?” 19 Causa8on Legal Causa?on The proximate cause: always ask, “should the defendant’s conduct be deemed the legal cause of the harmful result? ” and proceed with the 2-‐ prong test 20 Causa8on Novus Actus Interveniens If, awer the defendant has acted, some other act or event were to occur, bringing about the proscribed result, the defendant may escape liability 21 Causa8on General Principles of Causa8on 1. Defendant’s acRons need not be the scienRfic or medical cause of the result 2. Defendant does not need to touch vicRm 3. Defendant must take vicRm as she finds her 4. Defendant’s act need not be the sole cause of the consequence 5. An intervening act will break the chain of causaRon 22