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Letter string processing and visual short-term memory

Abstract : The present study investigated whether expertise with letter string processing influences visual short-term memory capacity. Specifically, we examined whether performance in a change-detection task would vary as a function of stimulus type (letters vs. symbols) and type of display (horizontal, vertical, and circular). Participants were asked to detect a one-character change in a briefly presented character array following a delay of 900 ms. Concurrent articulation was used to limit effects of rehearsal. Type of display significantly affected performance with letters, but not with symbols, with a selective increase in change-detection accuracy for horizontally presented letter arrays compared with vertical and circular arrays. These findings confirm the standard limits of storage in visual short-term memory, but critically reveal a selective advantage for letter arrays over symbol arrays when presented horizontally. Such an advantage is probably due to the utilization of a specialized encoding mechanism built up over years of reading experience.
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https://hal.archives-ouvertes.fr/hal-01152182
Contributor : Stéphane Dufau Connect in order to contact the contributor
Submitted on : Friday, May 15, 2015 - 1:53:42 PM
Last modification on : Tuesday, October 19, 2021 - 10:58:51 PM

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Maria Ktori, Jonathan Grainger, Stéphane Dufau. Letter string processing and visual short-term memory. Quarterly Journal of Experimental Psychology, Taylor & Francis (Routledge), 2012, 65 (3), pp.465--473. ⟨10.1080/17470218.2011.611889⟩. ⟨hal-01152182⟩

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