Executive functioning, along with short term memory impairment, is often one of thesymptomsof early-stage Alzheimers disease.
The Stroop effect was first written about by John Ridley Stroop in 1935 for his Ph.D. dissertation.
What Does the Stroop Test Contain?

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The Stroop Test consists of colors that are written in words but in the wrong color ink.
However, results have been shown to be influenced by age, education levels, and sex.
What Does the Stroop Test Identify?
How Accurate Is the Test?
Its ability to test executive functioning sets it apart as an important component of a comprehensive assessment of cognition.
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National Institutes of Health.
National Institute on Aging.Cognitive assessment considerations: understanding the evidence.
2009;24(4):413-429. doi:10.1093/arclin/acp043