Impact of simulated visual impairment on the cognitive test performance of young adults
Wood, Joanne M., Chaparro, Alex, Anstey, Kaarin J. , Hsing, Y. Eve, Johnsson, Alexia, Morse, Anna, & Wainwright, Sara (2009) Impact of simulated visual impairment on the cognitive test performance of young adults. British Journal of Psychology, 100(3), pp. 593-602.
Aims: This study investigated the effect of simulated visual impairment on the speed and accuracy of performance on a series of commonly used cognitive tests. ----- Methods: Cognitive performance was assessed for 30 young, visually normal subjects (M=22.0yrs ± 3.1 yrs) using the Digit Symbol Substitution Test (DSST), Trail Making Test (TMT) A and B and the Stroop Colour Word Test under three visual conditions: normal vision and two levels of visually degrading filters (VistechTM) administered in a random order. Distance visual acuity and contrast sensitivity were also assessed for each filter condition. ----- Results: The visual filters, which degraded contrast sensitivity to a greater extent than visual acuity, significantly increased the time to complete (p<0.05), but not the number of errors made, on the DSST and the TMT A and B and affected only some components of the Stroop test.----- Conclusions: Reduced contrast sensitivity had a marked effect on the speed but not the accuracy of performance on commonly used cognitive tests, even in young individuals; the implications of these findings are discussed.
Impact and interest:
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|Item Type:||Journal Article|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
|Copyright Owner:||The British Psychological Society|
|Deposited On:||29 Jan 2010 08:19|
|Last Modified:||01 Mar 2012 00:09|
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