What circumstances are considered external factors for non-insane automatism in R v. Quick?

In the context of R v. Quick, external factors for non-insane automatism specifically refer to those influences that can lead to a temporary loss of control over one’s actions without any underlying mental illness. The case established that situations such as violence, drugs, and alcohol can trigger this state.

In this judgement, intoxication from voluntary consumption of these substances can be classified as an external factor leading to automatism, provided that the intoxication does not result from a pre-existing medical condition or mental disorder. The backdrop of the case was centered around Quick's actions, which were deemed to be a direct result of factors external to his mental state, demonstrating that it was not a product of a mental illness but rather the result of acute situations and substances that affected his bodily functions.

Understanding these external circumstances is key to distinguishing between non-insane automatism and defenses related to mental disorder, which involve deeper, inherent psychological issues.