Fig. 4. In study 6, perceived demonstrator competence moderated the association between demonstrator bias and observer bias (solid lines) such that observed demonstrator biases were acquired more strongly if their source was depicted as competent.

Model-derived predictions, based on simulations from the reward/action hybrid model (dotted lines), captured this pattern. The interaction between competence and demonstrator bias remained significant when excluding extreme values of demonstrator bias (see the Supplementary Materials).