Fig. 3.

Evaluation of crowd wisdom using variable-friction devices. (A) Cost functions of scores, comparing constant-friction sliders to variable-friction devices. (B) Probability densities of rating scores that correspond to the cost functions above. Kolmogorov–Smirnov statistics represent deviation from normal distribution. (C) Pooled R²s comparing sliders with the same initial positions but different cost function. (D) Same as in C within subject. (E) Means and 95% confidence intervals for simulation of learning as in Fig. 2D.