[wraithdroplets]

The terms of immediacy are a great reminder of the importance of the 97 % of nonverbal context. Consider for example, the great American classic essay from Harvard Business Review "How to Run a Meeting" (1976, first published.)

[ZainRiz]

Link: https://hbr.org/1976/03/how-to-run-a-meeting

[paradoxparalax]

The essay has a few passages about things related to The social skill of Politeness, in a broader sense, The very Skill of Enchanting people. This is the skill ultimately responsible for making money, in my experience, no matter what other skills people will praise. I didn't find the specific mention of the 97%, as it was a long essay, but I will consider that what you mean with nonverbal must be related with the human social interaction.