DEMONSTRATING THE STROOP EFFECT
There are several ways to demonstrate the Stroop effect. When included in a properly designed experiment, they can also be used to measure our capacity to direct attention. These methods share the same basic procedure.
A paper version of the Stroop task involves showing words that are the names of colors in the participant's native language (for an English language version see Stroop test image here and other images here and here). The letters making up each word are printed in a color of ink different from the color name the word represents. You are asked to quickly respond with the color ink you see, and inhibit the printed word. It turns out that this is much harder than it sounds and research documents lower scores with increased directed attention fatigue.
As part of a study of the effect of high altitudes on mountain climbers, NOVA created an interactive web-based test of the Stroop effect involving three stages (see Table 1) . This version is available below. The third stage of the online test demonstrates the Stroop effect with color words displayed in the wrong color. Each stage is preceded by three (3) short practice demos. Once a given stage starts you will be asked to use the keyboard left and right arrow keys to give your responses. At the end of each stage the task will display your score (number correct and time).
- See more at: http://www.snre.umich.edu/eplab/demos/st0/stroopdesc.html#sthash.evqSaxPA.dpuf