The caregiver then left the room, leaving the child with the stranger to evaluate both separation and stranger anxiety. In the fourth episode, the caregiver returned and the stranger left, testing reunion behaviour and the child’s return to exploration. Following this, the caregiver left the child alone in the room, testing separation anxiety. The stranger then re-entered, again testing stranger anxiety. Finally, the caregiver returned to reunite with the child, assessing reunion behaviour.