Group Sizes and the Internet
Don't Believe Facebook; You Only Have 150 Friends Listen Story audio GORE-TEX, the company that makes wetsuits, hiking boots and ponchos, is the subject of a famous anecdote in the world of sociology. It centers on the guy who founded the company, Bill Gore. "When Bill Gore set the company up, he set it up in his backyard," Robin Dunbar, a professor of evolutionary anthropology at the University of Oxford, tells NPR's Rachel Martin.
NPR says: Don't Believe Facebook; You Only Have 150 Friends and discusses Dunbar's number. Dunbar says there are some neurological mechanisms in place to help us cope with the ever-growing amount of social connections life seems to require. Humans have the ability, for example, to facially recognize about 1,500 people. Now that would be an impressive number of Facebook friends. Facebook, Dunbar's Number & Geometry - The Transportationist
Facebook, Dunbar’s Number and current killer apps :: squareCircleZ British anthropologist Robin Dunbar conducted research in the 1990s on the optimum social network size for primates. It turns out that there is a correlation with neocortex volume – the bigger the brain, the bigger the possible social network. This stands to reason, since being able to recognise faces and to know the pecking order for everyone in the group takes brain power. For humans, Dunbar’s Number is approximately 150. This means that to be able to know each member in a community and to know where they fit in that community, we are limited to about 150 as the community size.
4users will acquire more and more friends, but the numberof replies that they send to other users will increase con-sistently only in stable social interactions. Eventually, apoint is reached where the number of contacts surpassesthe user’s ability to keep in contact with them.This saturation process will necessarily lead to some rela-tionships being more valued than others. Each individualtries to optimize her resources by prioritizing these inter-actions. To quantify the strength of these interactions,we studied the quantity ω outi Validation of Dunbar's Number in Twitter Conversations
Publication Type: Conference Paper Source: WSDM '08: Proceedings of the international conference on Web search and web data mining, ACM, New York, NY, USA, p.117–128 (2008) Keywords: Preferential behavior in online groups | cameronmarlow.com
Cameron Marlow | cameronmarlow.com Until recently, I founded and led the Data Science team at Facebook, which is responsible for applied research, product optimization and user behavioral modeling within the company. In addition, we study a range of theoretical and methodological topics around large scale social dynamics including incentives for online participation, the growth and evolution of social networks, media diffusion and interpersonal influence. I received my Ph.D. at the MIT Media Laboratory on the topic of media contagion and weblogs. You might also be familiar with my project Blogdex which tracks (used to track?)
Social networks: Primates on Facebook