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Psychol Aging. 2010 Sep;25(3):545-59. doi: 10.1037/a0018498.

The utility of Stroop task switching as a marker for early-stage Alzheimer's disease.

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  • 1Department of Psychology, Montana State University, Bozeman, MT 59717-3340, USA.

Erratum in

  • Psychol Aging. 2010 Dec;25(4):778. Ducheck, Janet M [corrected to Duchek, Janet M].


Past studies have suggested attentional control tasks such as the Stroop task and the task-switching paradigm may be sensitive for the early detection of dementia of the Alzheimer's type (DAT). The authors of the current study combined these tasks to create a Stroop switching task. Performance was compared across young adults, older adults, and individuals diagnosed with very mild dementia. Results indicated that this task strongly discriminated individuals with healthy aging from those with early-stage DAT. In a logistic regression analysis, incongruent error rates from the Stroop switching task discriminated healthy aging from DAT better than any of the other 18 cognitive tasks given in a psychometric battery.

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