The Stoop Effect of Interference

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The Stroop Effect Since birth, we are taught that certain words are connected with certain ideas. For example, the word R-E-D is associated with the color of the wavelength of light from approximately 620-740 nm on the electromagnetic spectrum (Bohren (2006)) or in simpler terms, the color of stop signs, roses or strawberries. What if after you have connected the word RED to this certain color, the word changed to A-H-P-A-H, a nonsense syllable? Kline (1921) created a law that says: “If a is already connected with b, then it is difficult to connect it with k, b gets in the way.” In the example above, anyone who is accustomed R-E-D being associated with the color red, would have difficulty connecting the color red to AHPAH. This law is not just specific for colors. Any example involving concepts or routines makes sense in the law. In Stroop’s (1935) interference article, it was discovered that there is more interference in color naming then color reading. The experiment described in the article tested whether there was more interference from words or from colors (Stroop 1935). Two tests were administered each with a separate control. The RCNd test determined how fast one could read color names where the color was different from the color name while the NCWd test determined how fast one could name colors where the color was different from the word on the page. The mean time for 100 responses increased from 63.3 seconds on the RCNd test to 110.3 seconds on the NCWd test or an
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