... interactive communi- cation: If. The effects of four communication modes on the linguistic performance of teams 133 THE EFFECTS OF INTERACTION ON SPOKEN DISCOURSE Sharon L. Oviatt Philip It. ... pattern of conversation and to reduce referential efficiency (Krauss ~z Bricker, 1967; Krauss, Garlock, Bricker, & McMahon, x For a discussion of the implications of this research for non/nteractive ... between humans. At present, there is no well developed discourse theory of human- machine communication, and the few studies comparing human- machine with human- human communication have focused on...