Visual comparisons within and between object parts: Evidence for a single-part superiority effect

Elan Barenholtz, Jacob Feldman

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Subjects judged whether two marks placed at different positions along a curved contour were physically the same. When targets were separated by a concave curvature extremum - corresponding to a part-boundary - decision latencies were longer than when they straddled an equally curved convex extremum, demonstrating a "single-part superiority effect". This difference increased with both stimulus duration and the magnitude of contour curvature. However, it disappeared when the global configuration was not consistent with a part-boundary interpretation, suggesting a critical role of global organization in part decomposition.

Original languageEnglish (US)
Pages (from-to)1655-1666
Number of pages12
JournalVision Research
Issue number15
StatePublished - Jul 2003

All Science Journal Classification (ASJC) codes

  • Ophthalmology
  • Sensory Systems


  • Curvature
  • Psychophysics
  • Shape

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