A weakness of Meltzoff and Moore's study?

-Not been replicated by other reserachers -Koepke failed to replicate the original findings. The researchers counterargued that this is becuase the follow-up reserach was lacking control -Possible that individual differences have a role to place in the inconsistent evidence, since Isabella et al found more strongly attached infant-caregiver pairs has greater interactional synchrony -Not fully understood what purpose these phenonmenon serve in childhood development, we can determine that, on balance, they are of importance.