Answer:
ethnomethodologists
Explanation:
Ethnomethodologists focus their study to give a reasoning on how a certain type of social order is formed through our social interaction.
Regardless or their background, people tend to develop a certain form of expectancy in the interactions based on the social status that their interaction partner has. If you're talking to someone with similar status as yours, you will most likely expected to be treated as equals (hoping that you will take turns speaking with one another)
Other example,
If your interaction partner has more authority than you (let's say that she is a professor and you are a student). Then you most likey expected the practitioner to be formal without any personal topic.