Sociometry

Sociometry is the study of social relationships, invented by the psychiatrist and sociologist Jacob Moreno. Similar to link analysis, sociometry involves using a tool called the sociogram, a graphical representation of social links.

Sociograms can be used to graph the communication between people over a long period of time (days, weeks or months), like a link diagram, or over as short a time as a single event. For instance, national security officials surveilling a meeting of hostile government officials may use a sociogram to determine associations between individuals based on who talks to who during a conference.