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

A lot of Freudians have tried and made a research program of extending their ideas scientifically, bringing them to robust scientific tests.

许多精神分析的支持者们,都试图建立研究项目,来科学地扩展他们的理论观点，使得这些理论观点得到了大量的科学研究。

耶鲁公开课 - 心理学导论课程节选