evaluation of studies

• many studies used multiple observers- high inter-rater reliability or they even used complex camera systems to document and slow down micro sequences of interaction between caregivers and infants, high control of infant studies reflects high internal validity
• socially sensitive research - interactional synchrony is a concern when investigating childrearing techniques, including norms around caregiver-infant interactions, some women may find their life choices criticised, such as mothers who decide to return to the workplace shortly after giving birth and cannot develop a high level of interactional synchrony with their infant