Now, these--the nature of these responses, this preferring faces, this sort of mimicry, is a matter of debate, and there's a lot of research going on asking how smart are babies.

这些天生的反应,这些对面孔的偏好,这种模仿,如今仍存有争论,许多研究依然在探寻婴儿究竟有多么聪明

耶鲁公开课 - 心理学导论课程节选