Agent causation, or Agent causality, is a category of determination in metaphysics, where a being who is not an event—namely an agent—can cause events (particularly the agent's own actions). Agent causation contrasts with event causation, which occurs when an event causes another event.[1][2] Whether agent causation as a concept is logically sound is itself a topic of philosophical debate.[1]
Defenders of this theory include Thomas Reid and Roderick Chisholm. Reid believed that agents are the only beings who have a will, and considered having a will to be a necessary condition of being considered the cause of an event.[3]