Viewing another person's eye movements improves identification of pulmonary nodules in chest x-ray inspection

Litchfield, Damien, Ball, Linden, Donovan, Tim, Manning, David and Crawford, Trevor (2010) Viewing another person's eye movements improves identification of pulmonary nodules in chest x-ray inspection. Journal of Experimental Psychology: Applied, 16 (3). pp. 251-262. ISSN 1076-898X DOI https://doi.org/10.1037/a0020082

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Abstract

Double reading of chest x-rays is often used to ensure that fewer abnormalities are missed, but very little is known about how the search behavior of others affects observer performance. A series of experiments investigated whether radiographers benefit from knowing where another person looked for pulmonary nodules, and whether the expertise of the model providing the search behavior was a contributing factor. Experiment 1 compared the diagnostic performance of novice and experienced radiographers examining chest x-rays and found that both groups performed better when shown the search behavior of either a novice radiographer or an expert radiologist. Experiment 2 established that benefits in performance only arose when the eye movements shown were related to the search for nodules; however, only the novices’ diagnostic performance consistently improved when shown the expert’s search behavior. Experiment 3 re-examined the contribution of task, image, and the expertise of the model underlying this benefit. Consistent with Experiment 1, novice radiographers were better at identifying nodules when shown either a naïve’s search behavior or an expert radiologist’s search behavior, but they demonstrated no improvement when shown a naïve model not searching for nodules. Our results suggest that although the benefits of this form of attentional guidance may be short-lived, novices can scaffold their decisions based on the search behavior of others.

Item Type: Article
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Psychology
Date Deposited: 14 Jan 2013 10:48
URI: http://repository.edgehill.ac.uk/id/eprint/4806

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