A weakness of Meltzoff and Moore's study?

-Hard to reliably interpret a baby's behaviour -Young babies had a lack of co-ordination of their limbs and most of their body is immoble. But their mouths tend to be in constant motion -Difficult to distinguish between general infant activity and specific imitated behaviour. Difficult to determine what is taking place from baby's POV. -Cannot be certain that the infants were actually engaging in interactional synchrony. Might have occured by chance, hard to determine a cause and effect relationship.