consists of 8 episodes, each designed to show certain beahviours
the caregiver and the stranger alternatively stay with the infant or leave
this enables observations of the infants's response to separation from the caregiver (separation anxiety), reunion with the caregiver (reunion behaviour), response to a stranger (stranger anxiety) and the novel environment (test base concept)
data was collected by a group of observers through a camera or one way mirror
it followed the infant's actions through proximity and contact seeking behaviours, contact maintaining behaviours, proximity and interaction avoiding behaviours, and contact and proximity resisting behaviours
each item was scored on intensity from a scale of 1-10