
Clark, H. H.(1996) Using language Cambridge: Cambridge University Press.
The challenge: participation-role assignment
It is easy to identify Speaker. It is hard to distinguish who is Addressee from who is (are) Side participant(s).
distance - orientation
- identify (age, gender, personality, background, etc.)
- density (the number of people)
- gesture
- eye gaze
- face expression
- having large luggage, stick, etc.
- having a cough
- having personal digital devices (focusing on the device)
- and so on


