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Stroop effect

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Also known as Stroop test

effect of psychological interference on reaction time

~21 min read

Encyclopedic overview

Naming the font color of a word is a slower and more difficult task if word and font color are mismatched (top) than if word and font color are unrelated (bottom). In psychology, the Stroop effect is the delay in reaction time between neutral and incongruent stimuli.

The effect has been used to create a psychological test (the Stroop test) that is widely used in clinical practice and investigation.

Excerpted from Wikipedia’s “Stroop effect” article, available under the CC BY-SA 4.0 licence.