Ainsworth's strange situation procedure
1. 7 episodes, 3 minutes each:
2. Child encouraged to explore - secure base
3. Stranger in and interacts - stranger anxiety
4. Caregiver leaves, stranger and child - separation and stranger anxiety
5. Caregiver returns, stranger leaves - reunion behaviour and secure base
6. Caregiver leaves child alone - separation anxiety
7. Stranger returns - stranger anxiety
8. Caregiver reunited with child - reunion behaviour