What is a key characteristic of a statement that qualifies as a statement against interest?

A statement against interest is a declaration made by an individual that is not only unfavorable to them but also exposes them to potential civil or criminal liability. This evidentiary rule is rooted in the belief that a person is unlikely to make such self-incriminating remarks unless they are true, thereby serving as a reliable exception to the hearsay rule.

Statements against interest can be made in various contexts, not just criminal cases, making the option that limits it to criminal cases incorrect. Additionally, it is not a requirement for the statement to involve multiple witnesses or to be documented by a lawyer; these factors do not contribute to the qualification of a statement as being against someone's interest. Thus, it is the ability of the statement to expose the speaker to liability that is the crucial characteristic for it to be classified as a statement against interest.