A strength of Meltzoff and Moore's study?

-Behaviours observed were video recorded in a lab -High levels of control is established, like rmeoving potential distractions from the baby's line of vision. -The videos were re-watched so that the researchers are unlikely to miss any key behaviours. Both inter and intra-obersver reliability can be established -Babies not aware they are being observed, so no demand characteristics, enhancing the validity of findings/conclusion.