1. Visual tracking

2. Disengagement of attention

3. Orientation to name

4. Differential response to facial emotion

5. Anticipatory response

6. Imitation of actions

7. Social babbling

8. Eye contact

9. Reciprocal social smile

10. Coordination of eye gaze and action

11. Reactivity

12. Cuddliness [not included in this version]

13. Soothability [not included in this version]

14. Social interest and shared affect

15. Transitions

16. Motor control and behaviour

17. Atypical motor behaviours

18. Atypical sensory behaviours

19. Engagement of attention

20. Insistence on having particular object

21. Sharing interest