When participating in a conversation, eye gaze can be an important part of the communication process. Our eyes signal the channel of communication: who we are talking to. But it is not always possible to control this, as Diane Abbot found out in an interview recently with ITV news.
In face-to-face communication, the eyes (and eye gaze) are the most powerful part of the body we have. John McDonnell illustrated this on Sunday when he directly turned to the camera during an interview on the Andrew Marr show (BBC). The change in gaze from interviewer to viewer (and then back) provided a powerful shift from the traditional interview format to one addressing the television viewer.