Written work such as Wikipedia articles can contain hindsight bias. Since reading biased texts can, in turn, increase recipients’ individual hindsight bias, it is an important agenda to examine effective debiasing strategies. In the present study (N = 164), we tested whether providing authors with debiasing strategies can effectively reduce hindsight bias in their content. Specifically, participants wrote an article based on several newspaper articles about a dam and we manipulated whether they received event knowledge (i.e., dam collapse) and a debiasing intervention. Ten blind coders rated the extent to which the produced articles were suggestive of the disaster. Debiasing was successful in reducing both author and article hindsight bias when provided before writing. However, it had no effect when applied to encourage a revision process after writing. We thus argue that implementing pre-writing debiasing in the field may be an important way to reduce collective hindsight bias.

维基百科文章等书面作品可能包含事后偏见。由于阅读有偏见的文本反过来会增加接受者的个人事后偏见，因此检查有效的去偏见策略是一个重要的议程。在本研究 ( N  =  164) 中，我们测试了为作者提供去偏见策略是否可以有效减少其内容中的事后偏见。具体来说，参与者根据几篇关于大坝的报纸文章写了一篇文章，我们操纵他们是否收到事件知识（即大坝倒塌）和去偏差干预。十名盲人编码员对所制作的文章对灾难的暗示程度进行了评级。在之前提供的情况下，去偏差成功地减少了作者和文章的事后偏见写作。但是，当应用于鼓励写作后的修订过程时，它没有效果。因此，我们认为在该领域实施写作前去偏见可能是减少集体事后偏见的重要方法。