Freud studied the mind and the brain and was intensely interested in the neural basis of thought and behavior.

弗洛伊德研究心理和大脑,并对思想和行为的神经基础,有着浓厚的兴趣。

耶鲁公开课 - 心理学导论课程节选

He extended it and developed it into a theory of psychosexual development.

他在此基础上扩展并提出了,性心理发展理论。

耶鲁公开课 - 心理学导论课程节选