Department of Government, Dartmouth College, Hanover, NH 03755
Proc Natl Acad Sci U S A. 2021 Apr 13;118(15). doi: 10.1073/pnas.1912440117.
Previous research indicated that corrective information can sometimes provoke a so-called "backfire effect" in which respondents more strongly endorsed a misperception about a controversial political or scientific issue when their beliefs or predispositions were challenged. I show how subsequent research and media coverage seized on this finding, distorting its generality and exaggerating its role relative to other factors in explaining the durability of political misperceptions. To the contrary, an emerging research consensus finds that corrective information is typically at least somewhat effective at increasing belief accuracy when received by respondents. However, the research that I review suggests that the accuracy-increasing effects of corrective information like fact checks often do not last or accumulate; instead, they frequently seem to decay or be overwhelmed by cues from elites and the media promoting more congenial but less accurate claims. As a result, misperceptions typically persist in public opinion for years after they have been debunked. Given these realities, the primary challenge for scientific communication is not to prevent backfire effects but instead, to understand how to target corrective information better and to make it more effective. Ultimately, however, the best approach is to disrupt the formation of linkages between group identities and false claims and to reduce the flow of cues reinforcing those claims from elites and the media. Doing so will require a shift from a strategy focused on providing information to the public to one that considers the roles of intermediaries in forming and maintaining belief systems.
先前的研究表明,纠正信息有时可能会引发所谓的“逆反效应”,即在挑战受访者的信仰或倾向时,他们会更强烈地支持对有争议的政治或科学问题的误解。我展示了后续的研究和媒体报道如何抓住这一发现,歪曲其普遍性,并夸大其在解释政治误解的持久性方面相对于其他因素的作用。相反,新兴的研究共识发现,当受访者接收到纠正信息时,通常至少在一定程度上能够提高其信念的准确性。然而,我所回顾的研究表明,纠正信息(如事实核查)的准确性增强效果往往不会持续或积累;相反,它们经常似乎会衰减或被精英和媒体的提示所压倒,这些提示更能迎合但准确性较低的主张。因此,即使误解已经被揭穿,它们通常仍会在公众舆论中持续多年。鉴于这些现实,科学传播的主要挑战不是防止逆反效应,而是理解如何更好地定位纠正信息,并使其更有效。然而,最终最好的方法是打破群体身份和虚假主张之间的联系,并减少精英和媒体强化这些主张的提示的流动。这样做将需要从一个专注于向公众提供信息的策略转变为一个考虑中介机构在形成和维持信仰体系方面的作用的策略。
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