PSYC 321 Chapter Notes - Chapter 4: Change Detection, Change Blindness, Beck

• School: Chico State University
• Department: Psychology
• Course: PSYC 321
• Professor: Dan Worthen

Document Summary

Grimes used photographs rather than simple novel objects or letters, thereby bringing demonstrations of change blindness closer to everyday perceptual experience. Change blindness for objects in natural scenes can occur during a fixation if the effects of a saccade are simulated by disrupting the retinal transient normally accompanying a change. Results closely related to findings where observers don"t notice changes to scenes but few would have predicted change of blindness that ppl show. Studies of visual integration used simple visual patterns presented to diff retinal positions across eye movements. Observers respond as soon as they detect changing object. Found observers rarely detect changes during first cycle of alternation & changes to objects in centre of interest. Flicker paradigm and forced choice detection paradigm intentional change detection tasks observers know changes will happen and search display to find differences. Shows observers are change blind when their primary task if to search for change.