evaluation of research into caregiver-infant interactions
+observations are controlled as both infant and PCG are recorded from different angles so detailed behaviour is recorded for later analysis - good validity
-issues with intentionality - infant mouth tends to be in constant motion so are all actions deliberate
-babies are often asleep or being fed
- Koepke et al failed to replicate the Melzoff and Moore's findings
*argued by M and M that it wasn't controlled
- observations don't tell us the purpose of synchrony or reciprocity
*evidence suggests that they are helpful in attatchment as well as empathy and language among others