How did nodding your head up and down come to be interpreted as “agreement” and nodding side to side as “disagreement” or denial across so many cultures?

Question

How did nodding your head up and down come to be interpreted as “agreement” and nodding side to side as “disagreement” or denial across so many cultures?

In: Other

Answer 1

First you should check out the Indian head shake. This code you mention is not universal.

Second, I think thisnis transversal to dogs and other creatures which is very interesting.

Third, and following second, I think i the negative might come from taking your nose away from something, or looking away. Imagine I offer you food, you smell it and shake your nose away from it.