Dunbar's Layers in Organizations (Scaling Teams)

An organizational application of Dunbar’s proposed layers of social relationships. It draws attention to differing levels of closeness and coordination as groups grow, while keeping the approximate network sizes distinct from design requirements.

Dunbar’s layers describe patterns in personal social networks: smaller circles of closer relationships sit within larger circles of less close ties. Frequently cited approximate cumulative sizes include 5, 15, 50, and 150, with larger acquaintance circles sometimes discussed. These are population patterns and hypotheses, not fixed capacities that can be read off a particular person or team.

For an organization, the useful question is how relationship demands and information flow change as it grows. A larger group may need clearer interfaces and local coordination because everyone cannot keep equally detailed shared context with everyone else. Team design still depends on the work, interdependence, tools, and people. A network layer is not evidence that a department of exactly that size will perform best.

When to use it

When informal coordination becomes strained, community participation changes, or a group is considering how to support close collaboration within a broader network.

How it can help

Helps question the assumption that every member of a growing group can retain equally detailed personal context about everyone else.