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Eye contrast polarity is critical for face recognition by infants

Journal Article


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Abstract


  • Just as faces share the same basic arrangement of features, with two eyes above a nose above a mouth, human eyes all share the same basic contrast polarity relations, with a sclera lighter than an iris and a pupil, and this is unique among primates. The current study examined whether this bright-dark relationship of sclera to iris plays a critical role in face recognition from early in development. Specifically, we tested face discrimination in 7- and 8-month-old infants while independently manipulating the contrast polarity of the eye region and of the rest of the face. This gave four face contrast polarity conditions: fully positive condition, fully negative condition, positive face with negated eyes (" negative eyes") condition, and negated face with positive eyes (" positive eyes" ) condition. In a familiarization and novelty preference procedure, we found that 7- and 8-month-olds could discriminate between faces only when the contrast polarity of the eyes was preserved (positive) and that this did not depend on the contrast polarity of the rest of the face. This demonstrates the critical role of eye contrast polarity for face recognition in 7- and 8-month-olds and is consistent with previous findings for adults.

UOW Authors


  •   Otsuka, Y (external author)
  •   Motoyoshi, Isamu (external author)
  •   Hill, Harold
  •   Kobayashi, M (external author)
  •   Kanazawa, S (external author)
  •   Yamaguchi, M (external author)

Publication Date


  • 2013

Citation


  • Otsuka, Y., Motoyoshi, I., Hill, H. C., Kobayashi, M., Kanazawa, S. & Yamaguchi, M. (2013). Eye contrast polarity is critical for face recognition by infants. Journal of Experimental Child Psychology, 115 (3), 598-606.

Scopus Eid


  • 2-s2.0-84877927066

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1245&context=sspapers

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/246

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 598

End Page


  • 606

Volume


  • 115

Issue


  • 3

Place Of Publication


  • United States

Abstract


  • Just as faces share the same basic arrangement of features, with two eyes above a nose above a mouth, human eyes all share the same basic contrast polarity relations, with a sclera lighter than an iris and a pupil, and this is unique among primates. The current study examined whether this bright-dark relationship of sclera to iris plays a critical role in face recognition from early in development. Specifically, we tested face discrimination in 7- and 8-month-old infants while independently manipulating the contrast polarity of the eye region and of the rest of the face. This gave four face contrast polarity conditions: fully positive condition, fully negative condition, positive face with negated eyes (" negative eyes") condition, and negated face with positive eyes (" positive eyes" ) condition. In a familiarization and novelty preference procedure, we found that 7- and 8-month-olds could discriminate between faces only when the contrast polarity of the eyes was preserved (positive) and that this did not depend on the contrast polarity of the rest of the face. This demonstrates the critical role of eye contrast polarity for face recognition in 7- and 8-month-olds and is consistent with previous findings for adults.

UOW Authors


  •   Otsuka, Y (external author)
  •   Motoyoshi, Isamu (external author)
  •   Hill, Harold
  •   Kobayashi, M (external author)
  •   Kanazawa, S (external author)
  •   Yamaguchi, M (external author)

Publication Date


  • 2013

Citation


  • Otsuka, Y., Motoyoshi, I., Hill, H. C., Kobayashi, M., Kanazawa, S. & Yamaguchi, M. (2013). Eye contrast polarity is critical for face recognition by infants. Journal of Experimental Child Psychology, 115 (3), 598-606.

Scopus Eid


  • 2-s2.0-84877927066

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1245&context=sspapers

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/246

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 598

End Page


  • 606

Volume


  • 115

Issue


  • 3

Place Of Publication


  • United States