Welcome to Module 2

In this module, we explore the core components that define criminal behavior under the law. You’ll examine the elements of a crime, focusing on the physical act (actus reus) and the mental state (mens rea) that must be present for criminal liability to exist. These foundational concepts are essential for understanding how courts determine guilt and how statutes are interpreted.

We’ll look closely at the Model Penal Code’s four levels of culpability—purpose, knowledge, recklessness, and negligence—and how they guide legal decisions about intent. You’ll also learn about strict liability crimes, which hold individuals accountable regardless of intent, and consider their implications through real-world examples like statutory rape.

Through readings, presentations, and video content, you’ll gain the tools to analyze criminal statutes and assess how legal definitions shape outcomes in the justice system. The materials will help you think critically about how laws balance fairness, accountability, and public safety.

As you engage with this module, consider how the law distinguishes between intentional wrongdoing and accidental harm—and how these distinctions affect both prosecution and punishment. Your assignments and discussions will challenge you to apply these concepts to actual cases and statutes, deepening your understanding of criminal liability.

Module Learning Outcomes

Upon successful completion of this module, you will be able to:

Examine the acts or states of mind that constitute elements of a crime. (CO: 1, 2, & 7)
Explain the difference between actus reus and mens rea. (CO: 1, 2, & 7)
Analyze criminal statutes to determine criminal liability by the four levels of culpability in the Model Penal Code. (CO: 1, 2, 6, 7, & 8)
Identify and discuss strict liability crimes. (CO1, 2, & 7)

(CLO = Course Learning Outcome)

To Do

Please read/watch all of the module learning materials (readings, presentations, videos, etc.) and complete all assignments/assessments listed below. If you have questions, please contact the course instructor or ask in the Questions About This Course forum.

Readings and Presentations:

Chapter 2: Civil Liability & the Essence of Crime
Chapter 2.pptxDownload Chapter 2.pptx

Watch the Videos:

Mens Rea: The Criminal State of Mind
Actus Reus: The Physical Act of Committing a Crime
What is a Strict Liability Crime?Links to an external site.

Review Assignment Resources

Law Info-Criminal Intent: Mens Rea and Actus Reus in Criminal Law
- A clear and accessible explanation of the two core elements of a crime, with examples and legal context.
H2O Open Casebook: Model Penal Code Culpability Definitions
- A Harvard Law School resource that breaks down the four levels of culpability in the MPC with direct excerpts and commentary.

Nolo's Free Dictionary of Law Terms & Legal Definitions

Assignments/Assessments

Complete the following assignments by the date and time indicated on each assignment page.

Module 2 Discussion: Statutory Rape as a Strict Liability Crime
Module 1 & 2 Assignment: Mapping Criminal Law – Legal Foundations, Liability, and Application in Massachusetts

Click the Next ▶ button to continue.