Some of our conversational conventions of indicating support for a speaker's comments become distracting interruptions in videoconference. Offer support with non-verbal signs. Stress goes up when remote participants fear they may be disconnected. A speaker phone may help bridge a gap. We want to include everyone, so if there are any technical glitches, we'll go to our back-up methods of connection.
Stress goes up when participants are overwhelmed by a large number of people to interact with.
For example, I am Mary from Fort Worth. Stress goes up when participants are aware of the typical 6 - 8 second delays in transmission. In general, the best advice is to simply slow down and let the audience see that you are not rushed. Stress goes up when participants are self-conscious of their appearance on monitors. Measure of monitor should equal the number of people.