Here are two examples of Breiger-type networks using the techniques described by Michael Pettit here.
These networks represent institutional links between the first ten presidents of Division 38 (Health Psychology) of the American Psychological Association.
For simplification, I’ve only included those institutions where more than one individual studied or taught. A shared institution (i.e., a line between two individuals) does not necessarily mean a concurrently shared institution.
Figure 1: People
Figure 2: Groups