FIGURE 3.

Wald t-test values for the alter and ego effects obtained by the RSiena model estimation. The alter effect represents which class of actors increases its indegree more rapidly, while the ego effect expresses which class increases its outdegree more rapidly. These t-statistics were estimated over time intervals of increasing length for the two transmission conditions. Results show that uninformed individuals display both a higher outdegree and indegree than informed individuals (negative t-statistics) and that the difference in outdegree between the two classes is more important than in indegree. Best fitted lines for the quadratic models are represented for “Followed” (black) and “Avoided” (grey) conditions. Shaded areas represent the standard errors of the models.