Size of Small Groups

There is no set number of members for the ideal small group. A small group requires a minimum of three people (because two people would be a pair or dyad), but the upper range of group size is contingent on the purpose of the group. When groups grow beyond fifteen to twenty members, it becomes difficult to consider them a small group based on the previous definition. An analysis of the number of unique connections between members of small groups shows that they are deceptively complex. For example, within a six-person group, there are fifteen separate potential dyadic connections, and a twelve-person group would have sixty-six potential dyadic connections.Owen Hargie,Skilled Interpersonal Interaction: Research, Theory, and Practice, 5th ed. (London: Routledge, 2011), 452–53. As you can see, when we double the number of group members, we more than double the number of connections, which shows that network connection points in small groups grow exponentially as membership increases. So, while there is no set upper limit on the number of group members, it makes sense that the number of group members should be limited to those necessary to accomplish the goal or serve the purpose of the group. Small groups that add too many members increase the potential for group members to feel overwhelmed or disconnected.