sociogram
n. a graphic representation of the relations among members of a social unit or group. In most cases, each member of the group is depicted by a symbol, such as a lettered circle or square, and the types of relations among members (e.g., communication links, friendship pairings) are depicted by lines and arrows. Sociometry, as originally developed by Jacob L. Moreno, uses objective data collected by observers or self-reports provided by members of the group to generate sociograms.