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Attending to objects: costs or benefits?

Daniela Mapelli1, Paolo Cherubini, Carlo Umiltà

  • 1Dipartimento di Psicologia Generale, Università di Padova, Italy.

Acta Psychologica
|January 5, 2002
PubMed
Summary
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Directing attention to a single object provides a benefit only when global object information is relevant. Otherwise, attending to one object incurs a cost compared to attending to two objects.

Area of Science:

  • Cognitive Psychology
  • Visual Perception

Background:

  • The single-object advantage suggests attention selects objects, not just space.
  • This advantage implies faster/accurate comparisons on one object versus two.

Purpose of the Study:

  • Investigate if attention to one object yields a benefit or cost.
  • Examine the role of object-related global information relevance.

Main Methods:

  • Five experiments compared performance when comparing features within one object, two objects, or no object.
  • Varied relevance of global information (e.g., symmetry, clutter).

Main Results:

  • Attending to one object benefited performance only when global object information was task-relevant.
  • Attending to one object incurred a cost when global object information was irrelevant.

Related Experiment Videos

Conclusions:

  • Object-based attention does not offer an absolute benefit.
  • Attending to one object results in a smaller cost than attending to two objects.