In reviewing Psychological Aspects of Cyberspace: Theory, Research, Applications, Matthew Hile of the Missouri Institute of Mental Health alludes to "Dunbar's number," the theoretical upper limit on the number of persons with whom one can maintain meaningful, stable, and coherent social connections (estimated to be approximately 150 people). This number is hypothesized to be set by relative neocortex size.
With our numerous links to Facebook, Twitter, MySpace, and other social networking sites, have many of us exceeded the cognitive limits set by Dunbar's number?
By Matthew G. Hile
PsycCRITIQUES, 2009 Vol 54(23)