Change blindness to gradual changes in facial expressionsDavid, Elodie and Laloyaux, Cédric and Devue, Christel and Cleeremans, Axel (2007) Change blindness to gradual changes in facial expressions. Psychologica Belgica, in press. Full text available as:
Official URL: http://www.ingentaconnect.com/content/acad/psyb Alternative URL: http://srsc.ulb.ac.be/axcWWW/papers/pdf/06-PB.pdf AbstractChange blindness—our inability to detect changes in a stimulus—occurs even when the change takes place gradually, without disruption (Simons et al., 2000). Such gradual changes are more difficult to detect than changes that involve a disruption. In this experiment, we extend previous findings to the domain of facial expressions of emotions occurring in the context of a realistic scene. Even with changes occurring in central, highly relevant stimuli such as faces, gradual changes still produced high levels of change blindness: Detection rates were three times lower for gradual changes than for displays involving disruption, with only 15% of the observers perceiving the gradual change within a single trial. However, despite this high rate of change blindness, changes on faces were significantly better detected than color changes occurring on non facial objects in the same scene.
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