Reciprocity: Caregiver–infant interaction is reciprocal, i.e. each person's interactions affect the other.
Alert phases-From birth babies signal when they are ready to interact (e.g. eye contact).
Active not passive-Babies don’t just respond, they initiate interaction (turn-taking ‘dance’).
Interactional synchrony-Caregiver and infant signals synchronise, i.e. they occur together (‘mirroring’).
Meltzoff and Moore stated that babies mirror adults’ expressions and gestures from two weeks old.
Isabella et al. suggested that synchrony linked to better quality mother–baby attachment.
one strength of research into caregiver-infant interactions is that they are usually filmed in a lab. This means that more than one person can observe, which increases inter-rater reliability
One limitation is there is a difficulty interpreting babies behaviour, as they lack coordination.
Another limitation is that observing behaviour does not tell us about the developmental importance. this means we cannot be certain that caregiver-infant interactions are important. CA- Isabella et. al research found they are important.