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Related Experiment Videos

Categorizing chairs and naming pears: category differences in object processing as a function of task and priming

T J Lloyd-Jones1, G W Humphreys

  • 1Department of Psychology, University of Kent, Canterbury, England. t.j.lloyd-jones@ukc.ac.uk

Memory & Cognition
|October 24, 1997
PubMed
Summary
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Structural similarity in object recognition slows naming, especially for visually similar items like fruits. Repetition priming helps object naming by improving semantic-to-name mapping, but not categorization.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psycholinguistics

Background:

  • Structural similarity between objects can influence cognitive processing.
  • Understanding the locus of these effects is crucial for models of object recognition and naming.

Purpose of the Study:

  • To investigate the location of structural similarity effects within the object recognition and naming system.
  • To examine how repetition priming interacts with structural similarity effects.

Main Methods:

  • Four experiments were conducted using normal subjects.
  • Tasks included superordinate categorization and naming of pictures and words.
  • Stimuli comprised exemplars from categories like clothing, furniture, fruit, and vegetables.

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Main Results:

  • Responses to structurally similar pictures (fruit, vegetables) were slower than dissimilar ones (clothing, furniture).
  • This effect was more pronounced in picture naming than categorization.
  • Repetition priming reduced structural similarity effects in naming, with equivalent priming from picture and word naming tasks.
  • Priming effects were not observed for categorization tasks.

Conclusions:

  • Structural similarity effects on priming are located in the mapping processes between semantic and name representations.
  • Visual competition between similar objects (e.g., fruits) impacts name selection.
  • Priming facilitates these semantic-to-name mappings, reducing competition and speeding up object naming.