Size of population 100 400 900 1600 Numerical impact factor of speakers (0 to 4) Generations (1 to 9999) Mutation rate (0 to 1; 1:=aquisition is random) Bias of first pattern (0 to 3) Bias of second pattern (0 to 3) Distribution of social influence All speakers are equal Normally distributed (1 to 20) Poisson curve (1,4,9,..,389,400) Poisson curve + few hyper-influentials Show settings message