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Selective interference with the use of visual images in the symbolic distance paradigm.

Research output: Contribution to journalJournal article

Published

Journal publication date09/2005
JournalJournal of Experimental Psychology: Learning, Memory and Cognition
Journal number5-6
Volume31
Number of pages26
Pages1043-1068
Original languageEnglish

Abstract

Eight experiments investigated the effects of visual, spatial, auditory, and executive interference on the symbolic comparison of animal size and ferocity, semantic goodness of words, and numbers. Dynamic visual noise (DVN) and the reading of visually presented stimulus items were shown to selectively interfere with response times on the animal size comparison task, though the slope of the symbolic distance function remained unchanged. Increased change of DVN significantly increased interference, but interference was reduced by equiluminant DVN. Spatial tracking reduced the slope of the symbolic distance function in contrast to an executive task that only increased mean latency and errors for all comparisons. Results suggest that the generation of an image is necessary for size comparison, but neither imagery nor executive function is responsible for the frequently observed distance-time function.