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Journal Article

Citation

Linnell KJ, Caparos S. J. Exp. Psychol. Hum. Percept. Perform. 2011; 37(5): 1643-1648.

Affiliation

Department of Psychology, Goldsmiths, University of London.

Copyright

(Copyright © 2011, American Psychological Association)

DOI

10.1037/a0024669

PMID

21767051

Abstract

Caparos and Linnell (2009, 2010) used a variable-separation flanker paradigm to show that (a) when cognitive load is low, increasing perceptual load causes spatial attention to focus and (b) when perceptual load is high, decreasing cognitive load causes spatial attention to focus. Here, we tested whether the effects of perceptual and cognitive load on spatial focus remain when, respectively, cognitive load is high and perceptual load is low. We found that decreasing cognitive load only causes spatial attention to focus when perceptual load is high and the stimulus encourages this. Moreover, and contrary to the widely held assumption that perceptual load focuses attention automatically (Lavie, Hirst, de Fockert, & Viding, 2004), perceptual load exerts its focusing effect only with the engagement of cognitive resources when cognitive load is low. In sum, perceptual and cognitive mechanisms exert interacting effects and operate in concert to focus spatial attention. (PsycINFO Database Record (c) 2011 APA, all rights reserved).


Language: en

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