Figure 6. Which attractor dominates when the majority effect and the expert effect apply simultaneously?

(A) The evolution of collective opinion when varying the relative proportion of experts p_{Exp ,} holding an opinion O_exp and a high confidence level C_exp = 6, and the proportion of people in the majority group p_maj holding an opinion O_maj and a low confidence level randomly chosen in the interval C_maj = [1 3]. Here, the number of neutral individuals is fixed to p_Neut = 0. (B) Phase diagram showing the parameter space where the majority or the expert effects applies, when increasing the proportion of neutral individuals p_Neut holding a random opinion and a low confidence level randomly chosen in the interval C_uni = [1 3]. The schematic regions delimited by black or white dashed lines show the zones where the collective opinion converges toward the majority or the expert opinion, respectively. In the transition zone, the collective opinion converges somewhere between O_exp and O_maj. In some rare cases, the crowd splits into two groups or more.