Multidimensional stimulus identification

Howard Egeth, Robert Pachella

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


In an absolute judgment task, total information transmitted about a set of stimuli increases as the dimensionality of the stimuli is increased. However, as the number of dimensions is increased, information transmitted about each component dimension decreases. Four factors were proposed that might, singly or in combination, account for this decrement: stimulus duration, interdimensional interference, distraction, and response complexity. The results of four experiments established that each of these factors may be operative under appropriate circumstances. It was also concluded that component dimensions were processed simultaneously rather than sequentially. However, the processing was not truly parallel because the input channels were not independent of one another.

Original languageEnglish (US)
Pages (from-to)341-346
Number of pages6
JournalPerception & Psychophysics
Issue number6
StatePublished - Nov 1969

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Sensory Systems
  • Psychology(all)


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