  Virtual Reality (VR) enables users to collaborate while exploring scenarios
not realizable in the physical world. We propose CollabVR, a distributed
multi-user collaboration environment, to explore how digital content improves
expression and understanding of ideas among groups. To achieve this, we
designed and examined three possible configurations for participants and shared
manipulable objects. In configuration (1), participants stand side-by-side. In
(2), participants are positioned across from each other, mirrored face-to-face.
In (3), called "eyes-free," participants stand side-by-side looking at a shared
display, and draw upon a horizontal surface. We also explored a "telepathy"
mode, in which participants could see from each other's point of view. We
implemented "3DSketch" visual objects for participants to manipulate and move
between virtual content boards in the environment. To evaluate the system, we
conducted a study in which four people at a time used each of the three
configurations to cooperate and communicate ideas with each other. We have
provided experimental results and interview responses.
