Does nodding your head up and down universally mean "yes"?

“In many cultures, it is most commonly, but not universally, used to indicate agreement, acceptance, or acknowledgment.”

http://en.wikipedia.org/wiki/Nod_(gesture)

(shakes head up and down)

I believe on Neptune it means something else.

Yes, though in India they nod their head from side to side instead.

It must be “tribal” Indians or something. I work eithmany Indians and Pakistani and none do that.

Indians do the up and down thing too. I am not sure what Indians Magnus is talking about…

nodding

eithmany=with many

I’m pretty sure it is nearly universal, especially if you include the facial features. There are six basic facial features that all humans, regardless of culture, or even age, recognize. They are happiness, surprise, disgust, fear, anger, and sadness.

Hm…I’m thinking that the side-to-side of shaking one’s head is more like a motion of shoving something away, and nodding is more like pulling something in and my husband wants to know why the hell I’m sitting here, all by myself, nodding and shaking my head!! Heh! Anyway, so a nod might be a universal kind of yes. But that’s just a theory.