We examined whether participants could differentiate between explanations of attitude-consistent behavior related to EU membership given from two perspectives (EU supporter and EU opponent) by means of three perspective taking modes (the explainer's own perspective, imagined in-group members' perspective, and imagined out-group members' perspective). Participants were presented with explanations provided from different perspectives and perspective taking modes, and they were asked to judge the extent to which they agreed with each explanation, to guess the attitude of the provider of each explanation, and to rate the quality of each explanation in various respects. Participants could not differentiate between explanations given by in-group members and out-group members who imagined the same perspective. They responded more favorably to explanations given from own perspective than from the imagined perspectives. The results suggest that there exists a shared understanding about how both sides should explain attitude-consistent behavior, but this understanding is measurably different from the actual explanations.