As changes in individual relationships spread through a group, eventually a split evolves. <a href=" the animation.
The school dance committee is split; one group wants an "Alice in Wonderland" theme; the other insists on "Vampire Jamboree." Mathematics could have predicted it. Social scientists have long argued that when under stress, social networks either end up all agreeing or splitting into two opposing factions. Either condition is referred to as "structural balance." New Cornell research has generated a mathematical description of how this evolves. Previous mathematical approaches to structural balance have proven that when conditions are right, the result of group conflict will be a split into just two groups, the researchers said. The new work shows for the first time the steps through which friendships and rivalries shift over time and who ends up on each side. "Structural balance theory applies in situations where there's a lot of social stress - gossip disparaging to one person, countries feeling pressure, companies competing - where we need to make alliances and find our friends and enemies," said Cornell Ph.D.
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