Infant Nathan is smiling and "talking" with short, loud noises.His mother responds each time Nathan expresses himself by smiling and talking.This interaction is described as:

Question

Quizplus · Accepted Answer

The interaction between the infant and mother, where they are both responding to each other's expressions and sounds, is described as reciprocal or synchronous. This means that they are both communicating with each other in a back-and-forth manner, taking cues from each other and responding appropriately.

Infant Nathan Is Smiling and "Talking" with Short, Loud Noises