Caregiver-infant interactions are filmed in a laboratory
[+] Other activity that can distract the baby can be controlled,, Observations are recorded andanalysed and this means it's unlikely for researchers to miss behaviours.//Filmed interactions means the observer can record data and establish inter-rater reliability-Babies dont know they are being observed and therefore they dont change their behaviour in response to observation.//This makes data collected valid and reliable
[-] Babies can lack co-ordination and are almost immobile. Movements being observed are only slight movements/ facial expressions.//This makes it difficult to determine what the baby is doing and whats happening from the baby's perspective. This means we cant be sure if behaviours seen have a special meaning
Observation alone doesn't tell us the developmental importances
[-]FELDMAN points out that ideas like synchrony only gives names to patterns of observable behaviours// These are robust phenomena as they can be reliably observed but they may not be useful in development as it doesn't give reasons for behaviours// This means you cant be certain from observational research alone that reciprocity and synchrony are important for children's development
{Counter}There is evidence from other research that early interactions are important
Isabella found that achievement of interactional synchrony predicted the development of a good quality attachment//This means that CG-I interactions are likely to be important in development