Baby head nodding is this normal Footnotes  ‘Emotional Reactions and Psychological Experimentation,’ American Journal of Psychology, April, 1917, Vol. 28, pp. 163-174.  ‘Psychology from the Standpoint of a Behaviorist,’ p.202.  The stimulus to love in infants according to our view is stroking of the skin, lips, nipples and sex organs, patting and rocking, picking up, etc. Patting and rocking (when not conditioned .
Why Do Infants Shake Their Heads?
One of the first times babies shake their heads is when they nurse from their mothers. This may first occur out of your baby’s attempt to try to latch. As your baby gets the hang of latching on, the shaking may then be a result of excitement.
What Does Nodding Your Head Mean?
A nod of the head is a gesture in which the head is tilted in alternating up and down arcs along the sagittal plane. In many cultures, it is most commonly, but not universally, used to indicate agreement, acceptance, or acknowledgment.