Difficult to test

• point

  Using infants and babies in research can make it difficult to test their behaviours. Infants lack coordinated movements and tend to move their limbs randomly. Infants 'test' out facial expressions independent from any interaction with an adult or caregiver
• evidence

  Infants lack coordinated movements and tend to move their limbs randomly. Infants 'test' out facial expressions independent from any interaction with an adult or caregiver
• Explain

  It is difficult to distinguish between their general behaviours and specific actions in response to an adult
• link

  This means that there is no certainty to the findings