Participants speak as representatives of groups. Participants speak as individuals, from their own unique experience. Participants speak to their own constituents and, perhaps, to the undecided middle. Participants speak to each other. Participants express unswerving commitment to a point of view, approach, or idea.
Participants express uncertainties, as well as deeply held beliefs.
Participants listen in order to refute the other side's data and to expose faulty logic in their arguments. Questions are asked from a position of certainty. These questions are often rhetorical challenges or disguised statements. Participants listen to understand and gain insight into the beliefs and concerns of the others. Questions are asked from a position of curiosity.