Geographically dispersed teams rely on information and communication technologies (ICTs) to communicate and collaborate. Three ICTs that have received attention are audio conferencing, video conferencing, and, recently, 3D virtual environments. These ICTs offer modes of communication that differ primarily in the number and type of cues available. In this study, we argue that communication mode will influence how perceptions of persuasiveness are formed, which will ultimately influence decision making. While media determinant theories can serve as a foundation for comparing many communication media, this may not always be the case. Specifically, video conferencing and 3D virtual environments contain most of the same cues, but the nature of those cues differs between the media. We utilize uncertainty reduction theory as an additional lens for describing the effect of communication mode on persuasion and decision making. Data were collected through an experimental task and will be used to test the hypotheses.