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  2. Dunbar's number - Wikipedia

    en.wikipedia.org/wiki/Dunbar's_number

    Dunbar's number. Dunbar's number is a suggested cognitive limit to the number of people with whom one can maintain stable social relationships—relationships in which an individual knows who each person is and how each person relates to every other person. [1][2] This number was first proposed in the 1990s by British anthropologist Robin ...

  3. Friendship paradox - Wikipedia

    en.wikipedia.org/wiki/Friendship_paradox

    The friendship paradox is the phenomenon first observed by the sociologist Scott L. Feld in 1991 that on average, an individual's friends have more friends than that individual. [1] It can be explained as a form of sampling bias in which people with more friends are more likely to be in one's own friend group.

  4. Six degrees of separation - Wikipedia

    en.wikipedia.org/wiki/Six_degrees_of_separation

    A Facebook platform application named "Six Degrees" was developed by Karl Bunyan, which calculates the degrees of separation between people. It had over 5.8 million users, as seen from the group's page. The average separation for all users of the application is 5.73 degrees, whereas the maximum degree of separation is 12.

  5. Science has determined how many friends you really need - AOL

    www.aol.com/news/2016-08-14-science-had...

    Now get ready to downsize your crew. According to new research, you only need five friends in your life. British psychologist, Robin Dunbarm breaks down our friendships into layers. The top layer ...

  6. Three degrees of influence - Wikipedia

    en.wikipedia.org/wiki/Three_degrees_of_influence

    Three degrees of influence is a theory in the realm of social networks, [1] proposed by Nicholas A. Christakis and James H. Fowler in 2007. It has since been explored by scientists in numerous disciplines using diverse statistical, mathematical, psychological, sociological, and biological approaches.

  7. Small-world network - Wikipedia

    en.wikipedia.org/wiki/Small-world_network

    A small-world network is a graph characterized by a high clustering coefficient and low distances. On an example of social network, high clustering implies the high probability that two friends of one person are friends themselves. The low distances, on the other hand, mean that there is a short chain of social connections between any two ...

  8. Sociometric status - Wikipedia

    en.wikipedia.org/wiki/Sociometric_status

    Sociometric status. Sociometric status is a measurement that reflects the degree to which someone is liked or disliked by their peers as a group. While there are some studies that have looked at sociometric status among adults, the measure is primarily used with children and adolescents to make inferences about peer relations and social ...

  9. Facebook - Wikipedia

    en.wikipedia.org/wiki/Facebook

    Facebook posts can have an unlimited number of characters. They can also have images and videos. Users can "friend" users, both sides must agree to being friends. Post can be changed to be seen by everyone (public), friends, people in a certain group (group) or by selected friends (private). Users can also join groups.