Sociogram Layouts

After posting about the sociograms used in my wife’s primary school, I became interested in the different ways in which they are laid out. And, on Google, I found a fascinating piece of research on the different effects of various sociogram layouts.
While sociograms may be associated with classroom dynamics, there is an increasing use of this visual tool for analyzing wider social interactions. Especially networks created on the web.
Because of this greater social application of sociograms, the researchers looked into two aspects: readability and communication (understanding). Yes, as strange as it seems, the two are not taken to be the same thing.
And one of the features that determines the effectiveness of these two outcomes is the way, and degree, that the linking lines cross each other (the technical term is edge crossings).
The research was based on subjects examining and being tested for comprehension on five different types of layout: radial, hierarchical, circular, group and free style. Additionally, each type was represented either with a minimum number of crossed links or with many such crossed lines.
There were several findings but I leave you with the following summary:
“subjects had a strong preference of placing nodes on the top or in the center to
highlight importance, and clustering nodes in the same group and separating
groups to highlight groups. They had tendency to believe that nodes in the
center or on the top are more important, and nodes in close proximity belong to
the same group.”
But overall, the most significant factor determining accurate reading and understanding of the sociograms was the time spent studying them. No surprise there then.
What I did find interesting, and of particular significance to teachers who still believe in the discredited VAK/learning styles cult, is that…
“It should be noted that visualization techniques, which are highly preferred by users, do not necessarily always produce best task performance, as demonstrated in this study.”
Below are the different ways that sociograms layouts that were studied. I have redrawn it for clarity and aesthetic reasons.

Reference:
Layout Effects on Sociogram Perception
Weidong Huang, Seok-Hee Hong and Peter Eades
IMAGEN Program, National ICT Australia Ltd.

caviglioli,
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