On the locus of redundancy effects in a letter-detection task

Jay G. Rueckl*, Satoru Suzuki, Su Ling Yeh

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

It takes longer to detect a target if it is the initial letter of a nonredundant letter string such as BNHTW than if it is the initial letter of a redundant letter string such as BBBBB (Johnson, 1986b; Johnson & Blum, 1988). The results of the present study reveal that the redundancy effect also occurs for mixed-case letters strings (e.g., BbbBb) and digit strings (e.g., 22222). In addition, these results suggest that the cause of the redundancy effect is not related to the visual properties of the noninitial letters per se but is instead related to the presence of the target in noninitial positions. Together, these results rule out a number of hypotheses about the cause of the redundancy effect and suggest that the locus of this effect is in processes involved in response selection and/or the read-out of information from the perceptual system.

Original languageEnglish (US)
Pages (from-to)412-421
Number of pages10
JournalPerception & Psychophysics
Volume49
Issue number5
DOIs
StatePublished - Sep 1 1991

ASJC Scopus subject areas

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

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