Abstract

Change blindness refers to the finding that people have difficulty detecting changes between visual scenes, whenthese scenes are separated by a brief interruption to visual input. The masked priming paradigm was integratedinto a change detection task using real world photos to examine if unconsciously perceived words could assist inthe detection and identification of changes. Results demonstrated superior detection accuracy for deletion andlocation changes compared to addition changes and that change detection response times were shorter fordeletion than either addition or location changes. Identification of deletion and addition changes was better thanfor location changes. Both change detection and identification performances were enhanced by a masked identityprime presented prior to the first scene in the change detection task. These results provide evidence thatunattended information can assist change detection and change identification performance.

Highlights

  • People usually have extremely well developed abilities to detect changes during uninterrupted viewing of a scene

  • The detection latency data for correct detections showed that these results were not attributable to a speed-accuracy trade-off as response times were shorter for deletion changes than location or addition changes

  • Identification of the changed object was more accurate for deletion and addition changes than for location changes

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Summary

Introduction

People usually have extremely well developed abilities to detect changes during uninterrupted viewing of a scene. When these changes occur during a brief interruption of visual input people are often unable to detect even quite large changes, a phenomenon known as change blindness (Rensink, O’Regan, & Clark, 1997; Simons, 2000; Simons & Levin, 1998). When there is even a short temporal interval between two scenes, the onset of the new scene produces multiple abrupt visual onsets and with no unique abrupt visual onset to guide attention to the location of a change, this produces change blindness. The aim of this study was to examine if change blindness could be reduced through the use of a cue unconsciously guiding attention in a change detection and change identification task

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