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Psychological Science 2024

Can Invalid Information Be Ignored When It Is Detected?

Adam T. Ramsey1; Yanjun Liu2,3; Jennifer S. Trueblood3

1 Vanderbilt University · 2 UNSW Sydney · 3 Indiana University Bloomington

open access

Abstract

= 815 adults, recruited through Amazon Mechanical Turk in the United States), we investigated whether people could ignore quantitative information when they judged for themselves that it was misreported. Participants recruited online viewed sets of values sampled from Gaussian distributions to estimate the underlying means. They attempted to ignore invalid information, which were outlier values inserted into the value sequences. Results indicated participants were able to detect outliers. Nevertheless, participants' estimates were still biased in the direction of the outlier, even when they were most certain that they detected invalid information. The addition of visual warning cues and different task scenarios did not fully eliminate systematic over- and underestimation. These findings suggest that individuals may incorporate invalid information they meant to ignore when forming beliefs.

DOI
10.1177/09567976241231571
Sources
openalex

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