In groups, members share norms, values, and roles. In groups, members share a collective identity. There is some controversy about the size of a small group. The lower limit is three persons. In a triad as compared to a dyad, the channels of communication increase.
Triads tend to be less stable than dyads.
The upper limit is that point at which members no longer recognize and relate to one another directly. The ideal size for a group is the smallest size capable of performing the task effectively. C. Group communication has some unique advantages. Through group synergy, groups provide more input than do individuals. Cohesive groups provide support and commitment.