Avoidant attachment is when infants show little to no distress upon separation from the caregiver and avoid contact upon their return.
Anxious-ambivalent attachment involves infants being extremely distressed upon separation from the caregiver and displaying mixed emotions upon their return.
Secure attachment is characterized by infants feeling distressed when separated from their caregiver but being able to compose themselves upon their return.
The infant's ability to imitate is an important aspect of social development.
The mother's behavior is more likely to be imitated by the child if it is contingent on the infant's actions.
Infants are sensitive to their caregivers' emotional expressions, particularly facial expressions.
Infants are able to recognize their own name by the end of the first year, indicating self-awareness.