Ainsworths strange situation was to test the nature of attachment. She used a novel environment in a 9x9 foot space marked into 16 squares. The procedure consists of 8 episodes testing stranger anxiety, separation anxiety, reunion behaviour and a novel environment. The researchers were behind a 1-way mirror or a video recorder and used event sampling with: proximity and contact seeking behaviours, contact maintaining behaviours, proximity and interaction-avoiding behaviours, contact and interaction resisting behaviours and search behaviours scored for intensity on a scale of 1-7.