Project groups are becoming a mainstay in today?s work environment. This coupled with globalization has distributed many teams. This makes communication among team members vital to project success. This study evaluates the impact of group size and social presence upon group communication. It compares key communication factors for three different social presence treatments (Face-to-Face without CS support; Face-to-Face with CS support; and distributed with CS support). In addition, it evaluates these impacts with two different group sizes. The results indicate that smaller and higher social presence groups maintain higher levels of communication than larger groups and groups with lower social presence. These results should alert project managers to the difficulty of communication between project team members in distributed global environments.