The findings of classical conditioning have been extended and replicated in all sorts of animals including crabs, fish, cockroaches and so on.

经典条件作用在所有的动物研究中,都得到了扩展和重复,这些动物包括了螃蟹，鱼类，蟑螂等。

耶鲁公开课 - 心理学导论课程节选