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No face-like processing for objects-of-expertise in three behavioural tasks.

Rachel Robbins1, Elinor McKone

  • 1School of Psychology, Australian National University, Canberra, ACT 0200, Australia. Dr.R.Robbins@gmail.com

Cognition
|April 18, 2006
PubMed
Summary

Behavioral studies do not support the expertise hypothesis for face processing. Dog experts showed no face-like processing for dogs, challenging the idea of specialized cognitive abilities for familiar objects.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Animal Behavior

Background:

  • The expertise hypothesis suggests specialized neural processing for objects of expertise.
  • Previous behavioral studies are often cited as supporting this hypothesis for face recognition.

Purpose of the Study:

  • To investigate whether behavioral evidence supports the expertise hypothesis for specialized face processing.
  • To test dog experts' processing of dogs using established behavioral paradigms.

Main Methods:

  • The study employed three behavioral tasks: inversion, the composite paradigm, and sensitivity to contrast reversal.
  • Participants included dog experts with proven expertise in breed individuation.
  • Human face processing was used as a baseline for comparison.

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Main Results:

  • Standard face processing results were replicated for human faces.
  • Dog experts did not exhibit face-like processing for dogs on any of the three behavioral tasks.
  • This indicates a lack of holistic/configural processing for dogs in experts.

Conclusions:

  • Behavioral data does not support the expertise hypothesis for domain-specific processing of faces.
  • The findings are consistent with previous research on object-of-expertise processing.
  • Specialized cognitive abilities for familiar objects may not rely on face-like processing mechanisms.