The Attention-Related Cognitive Errors Scale (ARCES) measures the frequency with which one experiences a variety of everyday cognitive failures for which an attention lapse is the most likely cause. As such, it is a measure of everyday mistakes that people make as a result of not paying sufficient attention to the task at hand and can be used as an assessment of cognitive impairment.

The ARCES is in the public domain and special permission is not required to use it for any purpose. The ARCES has been validated against the SART as a measure of attention-related errors in both its original (Cheyne, Carriere, & Smilek, 2006) and current revised (Smilek, Carriere, & Cheyne, 2010) form, and has been used with several large student and community samples. The ARCES has been used with a number of other relevant measures, including the MAAS-LO, MFS, CFQ, BPS, BDI-II, DASS, GSE, and ESS. The ARCES is scored either by simple summation or by calculating item mean scores.


For more information on the ARCES, please download our psychometrics PDF. And of course feel free to contact any of us if you have any questions about the use of the ARCES or our research.




J. Allan Cheyne, PhD   

Jonathan Carriere, PhD

Dan Smilek, PhD