substantial factor testglossary / SUBSTANTIAL-FACTOR TEST substantial-factor test. Torts. The principle that causation exists when the defendant’s conduct is an important or significant contributor to the plaintiff’s injuries. Cf. BUT-FOR TEST. [Cases: Negligence 380.] 词条贡献者 法律翻译Jenna,欧洲顶尖商学院国际经济法专业,专注翻译各类与投资基金和私募股权有关的法律文件。