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Orientation-specific possibility priming for novel three-dimensional objects.

P Williams1, M J Tarr

  • 1Department of Psychology, University of Massachusetts, Boston 02125, USA. pepper.williams@umb.edu

Perception & Psychophysics
|September 28, 1999
PubMed
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Priming effects in object possibility tasks rely on object recognition processes. However, this priming effect is sensitive to viewpoint changes, unlike recognition itself, suggesting specific representational access limitations.

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Object Recognition

Background:

  • Object recognition involves processes and representations that may also support priming effects in tasks like judging object possibility.
  • Investigating the relationship between object recognition and object possibility judgments can elucidate underlying cognitive mechanisms.

Purpose of the Study:

  • To examine whether priming effects in the object possibility task are supported by the same processes and representations used in object recognition.
  • To determine the influence of object orientation changes on both possibility priming and recognition performance.

Main Methods:

  • Three experiments were conducted, manipulating the picture-plane orientation of objects presented during study and test phases.
  • Participants performed an object possibility task (judging if line drawings represent possible 3D objects) and an old/new recognition task.

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  • Orientation differences between study and test stimuli ranged from 0 to 180 degrees.

    • Main Results:

    • Possibility priming, similar to recognition performance, decreased as the orientation difference between study and test increased from 0 to 60 degrees.
    • Significant possibility priming was absent for orientation differences greater than 60 degrees.
    • Object recognition performance continued to decline for orientation differences beyond 60 degrees, unlike possibility priming.

    Conclusions:

    • Possibility priming and object recognition appear to share common viewpoint-specific representations.
    • Accessing these shared representations for the object possibility task is constrained by viewpoint similarity, requiring orientation differences of less than 60 degrees.