Doli Capax

Doli Capax is a legal principle asserting that an individual can be held criminally responsible for their actions if they possess the capacity to understand the wrongfulness of those actions. This principle is often applied in determining the culpability of minors or individuals with mental impairments.

The term originates from Roman law, where it was used to determine the legal accountability of individuals based on their understanding of right and wrong. It has evolved through the centuries into a cornerstone of modern criminal jurisprudence.

In contemporary law, Doli Capax is crucial in assessing the criminal responsibility of minors under the age of 18, as well as individuals with mental disabilities. Courts often evaluate factors such as mental capacity and maturity to ascertain whether a defendant can be held liable for a crime based on this principle.

• A 15-year-old charged with theft may invoke Doli Capax to assert they lacked the capacity to comprehend the wrongfulness of their action due to their age.
• An individual with a diagnosed mental illness may be found not doli capax, leading to a verdict of not guilty by reason of insanity.

• R v. Smith (1838)