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Citation

Doherty-Sneddon G, Anderson AH, O'Malley C, Langton S, Garrod S & Bruce V (1997) Face-to-face and video-mediated communication: A comparison of dialogue structure and task performance. Journal of Experimental Psychology: Applied, 3 (2), pp. 105-125. https://doi.org/10.1037/1076-898X.3.2.105

Abstract
This article examined communication and task performance in face-to-face, copresent, and video-mediated communication (VMC). Study 1 showed that when participants in a collaborative problem-solving task could see and hear each other, the structure of their dialogues differed compared with dialogues obtained when they only heard each other. The audio-only conversations had more words, and these extra utterances often provided and elicited verbal feedback functions, which visual signals can deliver when available. Study 2, however, showed that high-quality VMC did not appear to deliver the same benefits as face-to-face, copresent interaction. It appears that novelty, attenuation, and remoteness all may have contributed to the effects found-factors that should be considered by designers of remote video-conferencing systems.

Journal
Journal of Experimental Psychology: Applied: Volume 3, Issue 2