Fig. 2.

Behavioral analysis. (A) Behavioral clustering in buyers. Incrementalists (blue) send suggestions that are highly correlated with their true value. Strategists (red) send suggestions that are negatively correlated with value. Strategists appear similar to incrementalists and thus reap the surplus from high-value trials. Conservative buyers (green) play closest to an economically rational actor and reveal no information about their value with their suggestions. Triangles indicate subjects who were classified as sophisticated “level-2” buyers according to a generative model. (B) Mean Kullback-Leibler (KL) distances of the players’ choice distribution from the uniform distribution. Incrementalists and strategists are both significantly closer to the uniform distribution than conservatives but are not significantly different from each other. (C) Histograms showing suggestion frequencies for a single incrementalist (Left) and a single strategist (Right). Note that from the perspective of the seller the two are indistinguishable.