There is currently a debate in political psychology about whether dogmatism and belief superiority are symmetric or asymmetric across the ideological spectrum. Toner, Leary, Asher, and Jongman-Sereno (2013) found that dogmatism was higher among conservatives than liberals, but both conservatives and liberals with extreme attitudes reported higher perceived superiority of beliefs. In the current study, we conducted a preregistered direct and conceptual replication of this previous research using a large nationally representative sample. Consistent with Toner et al.’s findings, our results showed that conservatives had higher dogmatism scores than liberals, whereas both conservative and liberal extreme attitudes were associated with higher belief superiority compared with more moderate attitudes. As in their study, we also found that whether conservative or liberal attitudes were associated with higher belief superiority was topic dependent. Contrasting Toner et al.’s findings, our results also showed that ideologically extreme individuals had higher dogmatism. We discuss implications of these results for theoretical debates in political psychology.

目前在政治心理学中存在关于教条主义和信仰优势在意识形态范围内是对称还是不对称的争论。Toner、Leary、Asher 和 Jongman-Sereno (2013) 发现保守派的教条主义高于自由派，但保守派和极端态度的自由派都报告了更高的信念优越性。在当前的研究中，我们使用具有全国代表性的大型样本对先前的研究进行了预先注册的直接和概念复制。与 Toner 等人的研究结果一致，我们的结果表明，保守派的教条主义得分高于自由派，而保守派和自由派的极端态度与较温和的态度相比，都与更高的信念优势相关。在他们的研究中，我们还发现，无论是保守态度还是自由态度与更高的信念优势有关，这取决于主题。与 Toner 等人的研究结果相反，我们的结果还表明，意识形态极端的个体具有更高的教条主义。我们讨论了这些结果对政治心理学理论辩论的影响。