All Radiologists Make This Mistake - Prove Us Wrong

Study Details

Information about this study has been provided by the principal investigator.

Perception is biased by the past. Observers have shown to mis-recall stimuli as more similar to previously presented images (Fisher & Whitney, 2014; Liberman et al., 2014). This bias in the visual system to misperceive current stimuli towards previous stimuli is called serial dependence. In radiological screening, radiologists scan myriads of radiographs with the intent of recognizing and differentiating cancerous masses. Even though they are trained experts, radiologists’ human search engines are not perfect: average daily error rates are estimated around 3-5%. A main underlying assumption in radiological screening is that visual search on a current radiograph occurs independently from previously seen radiographs. However, some of the diagnostic errors exhibited by radiologists may be caused by serial dependence from previously seen radiographs.

We are inviting any and all radiologists to participate in this 30 minute study. Google Chrome is recommended. Please email Cristina Ghirardo at should you have any questions. Thank you for participating!

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Cristina Ghirardo

University of California, Berkeley

Participant Qualifications

  • Radiologists and radiologists-in-training

Principal Investigator

Professor David Whitney


University of California, Berkeley

IRB Approval Number


These experiments are not conducted by the National Cancer Institute (NCI). NCI features studies on this page as a resource to the extramural community. The listing of any study, PI, or organization does not imply endorsement in the study’s validity or any research entity. For questions, contact Todd Horowitz.

Last Updated
December 21, 2020