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Enns, James T.; MacDonald, Sarah C. – Journal of Experimental Psychology: Human Perception and Performance, 2013
Visual artists and photographers believe that a viewer's gaze can be guided by selective use of image clarity and blur, but there is little systematic research. In this study, participants performed several eye-tracking tasks with the same naturalistic photographs, including recognition memory for the entire photo, as well as recognition memory…
Descriptors: Foreign Countries, Eye Movements, Photography, Visual Stimuli
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Lleras, Alejandro; Porporino, Mafalda; Burack, Jacob A.; Enns, James T. – Journal of Experimental Child Psychology, 2011
In this study, 7-19-year-olds performed an interrupted visual search task in two experiments. Our question was whether the tendency to respond within 500 ms after a second glimpse of a display (the "rapid resumption" effect ["Psychological Science", 16 (2005) 684-688]) would increase with age in the same way as overall search efficiency. The…
Descriptors: Visual Stimuli, Visual Perception, Children, Adolescents
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Kawahara, Jun-ichiro; Enns, James T. – Journal of Experimental Psychology: Human Perception and Performance, 2009
When observers try to identify successive targets in a visual stream at a rate of 100 ms per item, accuracy for the 2nd target is impaired for intertarget lags of 100-500 ms. Yet, when the same stream is presented more rapidly (e.g., 50 ms per item), this pattern reverses and a 1st-target deficit is obtained. M. C. Potter, A. Staub, and D. H.…
Descriptors: Competition, Observation, Visual Perception, Experiments
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Shore, David I.; Burack, Jacob A.; Miller, Danny; Joseph, Shari; Enns, James T. – Developmental Science, 2006
Changes to a scene often go unnoticed if the objects of the change are unattended, making change detection an index of where attention is focused during scene perception. We measured change detection in school-age children and young adults by repeatedly alternating two versions of an image. To provide an age-fair assessment we used a bimanual…
Descriptors: Infants, Young Adults, Memory, Computer Software