change detection

change detection - CogLab Report: Change Detection...

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CogLab Report: Change Detection Introduction The question under investigation is change blindness, that is, the difficulty in detecting changes in scenes. Ronald Rensink and coworkers did a similar experiment where they presented one picture to a subject, followed by a blank field, followed by the same picture, but with an item missing, followed by the blank field, then by the original picture and so on. These pictures were rotated and alternated in a way that was difficult for the subject to determine what the change or difference was if any. He found that the pictures had to be alternated and rotated back and forth a number of times before the difference was detected. The importance of attention (or lack of it) in determining whether or not a subject has change blindness was exhibited by adding a cue indicating which part of a scene has been changed. Rensink tested this and participants detected the changed much more quickly and correctly. This experiment is designed to test how difficult it can be to detect change.
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This note was uploaded on 03/20/2008 for the course PSY 432 taught by Professor Hornak during the Spring '08 term at Meredith.

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change detection - CogLab Report: Change Detection...

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