Imitation and mirroring what the other person is doing in terms of facial and body movements
What is reciprocity?
Responding to the action of the other person with a similaraction (not necessarily mirroring)
What was the method of M and M?
Caregivers of the babies would open their mouth, close their mouth, stick there tongue out and put their tongue away. An observer would watch the tapes twice to see what the babies replied with
What is inter observation?
When twodifferentobservers got the same scores when watching the tapes
What is intra observation?
When oneobserver got the same scores both times they watched the tapes
What is the term used to describe the back-and-forth interaction between caregiver and infant?