Answer:
Interactional synchrony
Explanation:
In psychology, the term interactional synchrony refers to how a parent’s or caregiver's speech and infant’s behaviour become synchronised so that they are in direct response to one another.
In other words, the infant mirrors the actions of another person (usually the parent or caregiver) and moves his/her body and expressions in tune with the ones from the adult. Then, the adult responds to the infant and they become engaged in a synchronised pattern of behavior.
In this example, Ashley picks up her ball and she says ball, then her father answers with "that's right! Ball" and she laughs. Then she is tired and her father picks her up and sings softly to her. We can see that Ashley and his dad's behavior are synchronised and they are in response to one another (she cries and he sings to her, she picks a ball and he responds and she laughs), therefore they are engaged in interactional synchrony.
