Meltzoff and Moore

• Point

  Meltzoff and Moore's study on interactional synchrony was filmed
• explain

  This means observations can be analysed later and there's no ambiguity to the baby's responses as researchers will not miss any behaviours
• explain 2

  Using infants at such a young age (two-three weeks old) means that they are unaware they are being filmed and so their behaviour will not change in response to being recorded (which is more likely with older subjects being filmed)
• Link

  Therefore data collected will have high validity