We thank Annika Kühle, Greta Zschoche, Jasmin Thurley, and Cornelia Ohlhorn for their help in data acquisition. Ulrike M. Krämer is supported by the DFG.

In social interactions, emotional biases can arise when the emotional state of oneself and the other person are incongruent to each other. A person’s ability to judge the other’s emotional state can then be biased by her own emotional state, leading to an emotional egocentric bias (EEB). Alternatively, a person’s perception of her own emotional state can be biased by the other’s emotional state leading to an emotional altercentric bias (EAB). Using a modified version of a previously introduced audiovisual paradigm, we examined in online studies whether EEB and EAB can be considered traits by measuring two timepoints within participant and relating them to empathy scales. Further, we investigated the electrophysiological correlates of EEB and EAB in a lab-based study.