meltzoff moore 1977

• adult displayed one of three facial expressions, observers filmed the child response and found an association between infant behaviour and adult model, imitated,
• reciprocity and interactional synchrony difference- reciprocity- reciprocal- done in return, mutual response, back and forth pattern of communication, infant behaviour elicits a response from a caregiver, Interactional synchrony- at the same time, temporal coordination of behaviours between an infant and their caregiver, high degree of timing, synchronised and coordinated responses
• meltzoff and moore- 12-21 day old babies measured for imitation of 3 facial expressions
• limitation- lab procedure- lacks ecological validity therefore may not be representative of results seen in the real world, a lab experiment may also exaggerate or inhibit certain behaviours that would or would not be present in a real world situation, such as the baby may already be heightened to being ignored by their parent as they are in an unfamiliar setting