Department of Psychology, University of Tübingen, Schleichstr. 4, 72076, Tübingen, Germany.
Atten Percept Psychophys. 2021 Apr;83(3):1329-1336. doi: 10.3758/s13414-020-02209-6. Epub 2020 Dec 2.
We performed a registered and precise replication of Experiment 1 reported in Brady and Alvarez (Psychological Science, 22, 384-392, 2011). The original experiment found that participants, who were asked to memorize the size of differently colored circles, reported the size of a probed circle biased toward the mean size of the same-colored group. Because our previous three unpublished replication attempts failed to find this effect, we powered the present registered replication using a Bayes Factor Design Analysis such that it provided compelling evidence regarding the presence or absence of the reported bias with a high probability, even under the assumption of smaller effect sizes. Thus, we recruited 663 participants through Amazon Mechanical Turk. We observed both a significant bias and strong Bayesian evidence in favor of the existence of a bias over the null hypothesis. Thus, our results can be considered a successful replication of the original findings, although with a considerably smaller effect size. We discuss the role of data quality when recruiting participants with Amazon Mechanical Turk. The present findings corroborate the idea that memory representations of individual objects are influenced by summary statistics.
我们对 Brady 和 Alvarez（《心理科学》，22，384-392，2011）报告的实验 1 进行了注册和精确复制。原始实验发现，要求参与者记忆不同颜色圆圈大小的参与者，会偏向于报告同色组的平均大小的探测圆圈的大小。由于我们之前的三次未发表的重复尝试都没有发现这种效果，因此我们使用贝叶斯因子设计分析为本次注册复制提供了动力，即使在假设较小的效果大小的情况下，也能以高概率为报告的偏差的存在或不存在提供令人信服的证据。因此，我们通过亚马逊土耳其机器人（Amazon Mechanical Turk）招募了 663 名参与者。我们观察到了一个显著的偏差和强烈的贝叶斯证据，支持在零假设下存在偏差。因此，我们的结果可以被认为是对原始发现的成功复制，尽管效果要小得多。我们讨论了在使用亚马逊土耳其机器人招募参与者时数据质量的作用。本研究结果证实了这样一种观点，即个体物体的记忆表示受到汇总统计数据的影响。
