On 7/4/07, Ved Prakash Vipul <[EMAIL PROTECTED]> wrote:
measure), 3) spontaneous yawning is performed by fetuses in the womb, but kids don't learn contagious yawns until several years after birth.
I've noticed that my son's yawning may cause me to yawn but not vice versa. I guessed it developed later. The question is, is it a reflex that takes some time to develop or is a learned behavior? -- b
