Skip to main content
placeholder image

Object change detection: effects of attention, change magnitude and part addition or deletion

Conference Paper


Abstract


  • Detecting changes to our visual environment is an important skill. To this end, numerous studies have

    measured our ability to detect changes to 2- and 3-D objects, as well as entire scenes. Investigations of

    object change detection have shown that changes involving more object parts are detected more easily

    than smaller changes involving fewer parts. However, whether these larger changes improved detection

    by guiding the observer attention to the change location is still subject to debate. In the present study,

    participants were cued (valid, no cue, invalid) to the location of one of three objects in a one-shot change

    detection task. Changes involved the addition or deletion of 1, 2 or 3 parts to one of the three objects.

    Results showed: (i) that part additions were detected more accurately than deletions, and (ii) a strong

    effect of change magnitude for both these types of changes. Change detection performance was much

    better in valid and no cue conditions than the invalid cue condition and the effect of valid cues was

    stronger for deletions than additions. The pattern of results is discussed in regards to the role of attention

    in change detection.

Publication Date


  • 2009

Citation


  • Favelle, S. K., Palmisano, S. A. & Graham, R. (2009). Object change detection: effects of attention, change magnitude and part addition or deletion. 36th Australasian Experimental Psychology Conference (p. 20). School of Psychology, University of Wollongong: Australian Psychological Society.

Start Page


  • 20

Place Of Publication


  • School of Psychology, University of Wollongong

Abstract


  • Detecting changes to our visual environment is an important skill. To this end, numerous studies have

    measured our ability to detect changes to 2- and 3-D objects, as well as entire scenes. Investigations of

    object change detection have shown that changes involving more object parts are detected more easily

    than smaller changes involving fewer parts. However, whether these larger changes improved detection

    by guiding the observer attention to the change location is still subject to debate. In the present study,

    participants were cued (valid, no cue, invalid) to the location of one of three objects in a one-shot change

    detection task. Changes involved the addition or deletion of 1, 2 or 3 parts to one of the three objects.

    Results showed: (i) that part additions were detected more accurately than deletions, and (ii) a strong

    effect of change magnitude for both these types of changes. Change detection performance was much

    better in valid and no cue conditions than the invalid cue condition and the effect of valid cues was

    stronger for deletions than additions. The pattern of results is discussed in regards to the role of attention

    in change detection.

Publication Date


  • 2009

Citation


  • Favelle, S. K., Palmisano, S. A. & Graham, R. (2009). Object change detection: effects of attention, change magnitude and part addition or deletion. 36th Australasian Experimental Psychology Conference (p. 20). School of Psychology, University of Wollongong: Australian Psychological Society.

Start Page


  • 20

Place Of Publication


  • School of Psychology, University of Wollongong