Such notions have been around a lot longer than scary movies. The word lunacy, meaning "madness," is derived from Luna, the Latin name for the Roman goddess of the moon. And, a hundred years ago in some European hospitals, fear of violence during full moons led doctors to chain up patients thought to be lunatics.

这种观念在恐怖电影出现之前便已流传许久。“lunacy”这个表示“疯狂”的词源自“Luna ”一罗马神话中月光女神的拉丁名。一百年前，欧洲的一些医院在月圆时因为担心会出现暴力行为， 而用链子绑住那些被认为是疯子的患者。