Reprocity - A description of how two people interact. Caregiver infant interaction is reciprocal in that both caregiver and infant respond to each others signals and elicits a response from another.
Interactional Synchrony - Caregiver and baby reflect both the actions and emotions of the other and do this in a coordinated way.
Babies have alert phases in which they signal that they are ready for a spell of interaction. Research shows that mothers typically pick up and respond to their babies alertness.
Both baby and caregiver can initiate reactions
Two people are synchronised when they carry out the same action simultaneously.
Brazelton described reprocity as like a dace because it is just like a couple's dance where each partner responds the others moves.
Interactional synchrony can be defined as 'the temporal coordination of micro-level social behaviour' by Feldman
Meltzoff and Moore observed yje beginning of interactional synchrony in babies as young as 2 weeks old - Babies copiedd facial expressions of parents.
Isabella et al observed 30 mothers and babies and assessed the degree of synchrony. High levels of synchrony suggested better quality attachment.