Smith T J, Lamont P, Henderson J M, 2012, "The penny drops: Change blindness at fixation" Perception 41(4) 489 – 492
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The penny drops: Change blindness at fixation
Tim J Smith, Peter Lamont, John M Henderson
Abstract. Our perception of the visual world is fallible. Unattended objects may change without us noticing as long as the change does not capture attention ( change blindness). However, it is often assumed that changes to a fixated object will be noticed if it is attended. In this experiment we demonstrate that participants fail to detect a change in identity of a coin during a magic trick even though eyetracking indicates that the coin is tracked by the eyes throughout the trick. The change is subsequently detected when participants are instructed to look for it. These results suggest that during naturalistic viewing, attention can be focused on an object at fixation without including all of its features.
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