Ape See, Ape Do — Leslie 2007 (1213): 4 — ScienceNOW
Apes can wield tools, learn sign language, and get hooked on TV. New research credits them with yet another ability once thought to be exclusively human: duplicating the facial expressions of others. The work suggests that this capability, which might help individuals synchronize their emotions, precedes the origin of our species.
表情も真似るって。なんでもないことのようだけれど、人間が人間であるために、相手と同調する能力っていうのはとてもたいせつで、進化について考えさせられる話。