Illusion decrement in intersecting line figures

Stanley Coren, Joan Girgus

Research output: Contribution to journalArticle

28 Scopus citations


This study tests the generality of illusion decrement using four illusion figures involving intersecting lines: the Zoellner, Poggendorff, Wundt-Hering, and Mueller-Lyer figures. Five minutes of inspection with testing at 1-min intervals led to significant decrement in all figures. The rate of decrement was the same for all figures. These data are consistent with a judgmental theory of geometric illusions.

Original languageEnglish (US)
Pages (from-to)108-110
Number of pages3
JournalPsychonomic Science
Issue number2
StatePublished - Jan 1 1972

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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