There's some (unofficial) theories that you can judge a person's MBTI type by looking at their facial features. http://www.socionics.com/advan/vi/vi.htm http:/

There's some (unofficial) theories that you can judge a person's MBTI type by looking at their facial features. http://www.socionics.com/advan/vi/vi.htm http://www.socionics.com/advan/vi/vi.htm I don't think there's hard evidence of it though - just one's own experiences. I can guess the P/J split (J types have a serious look) and the F/T split (F types usually indicate to you their mood with their expressions) with a quick glance at the face, but haven't done anything in a controlled setting.