Persuasion dynamics
  We here discuss a model of continuous opinion dynamics in which agents adjust continuous opinions as a result of random binary encounters whenever their difference in opinion is below a given threshold. We concentrate on the version of the model in the presence of few extremists which might drive the dynamics to generalised extremism. The intricate regime diagram is explained by a combination of meso-scale features involving the first interaction steps 
Gerard Weisbuch (LPS), Guillaume Deffuant (LISC), Frederic Amblard   (LISC)