Metacontrast inferred from reaction time and verbal report: Replication and comments on the Fehrer-Biederman experiment

Ira H. Bernstein, Vicki E. Amundson, Donald L. Schurman

Research output: Contribution to journalArticle

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Attempted to replicate E. Fehrer and I. Biederman's (see record) study which found that reaction time (RT) to a test stimulus followed by a mask stimulus was significantly more rapid than RT to a mask stimulus alone, even when Ss could not exceed chance in making a verbal discrimination between the 2 alternatives. The possibility that this finding is a statistical artifact because of the use of 2 tests of unequal power is noted. A similar experiment was performed using signal detection procedures to compare the accuracy of verbal report and RT directly, using 3 paid male graduate and undergraduate students and 1 of the authors as Ss. Results show that verbal report rather than RT was a more sensitive response index. Findings are discussed in relation to C. W. Eriksen's 1960 multiple concurrent response paradigm. (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)195-201
Number of pages7
JournalJournal of Experimental Psychology
Issue number1
StatePublished - Sep 1 1973



  • test stimulus followed by mask stimulus vs mask stimulus alone, reaction time & verbal report accuracy, attempted replication of E. Fehrer & I. Biederman's study

ASJC Scopus subject areas

  • Medicine(all)

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