Verbal interference with encoding in a perceptual classification task

Howard S. Hock, Howard Egeth

Research output: Contribution to journalArticlepeer-review

102 Scopus citations


Altered the Stroop test to require the binary classification of colors. Although the required verbal responses ("yes" and "no") bore no direct semantic relation to the printed words, interference with the classification response was still obtained from 36 undergraduates. The interference seemed to be at the stage of implicit color identification or coding rather than at the stage of overt response competition. G. S. Klein's (see 39:5) interpretation of the encoding process is discussed. (15 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)299-303
Number of pages5
JournalJournal of Experimental Psychology
Issue number2 PART 1
StatePublished - Feb 1970
Externally publishedYes


  • perceptual classification task, verbal interference with encoding

ASJC Scopus subject areas

  • General Medicine


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