Stroop Interference

Decent Essays
Interference was examined using the numerical Stroop task as a way to quantify the effects of conflicting stimuli. We hypothesized that it would take more time to complete a counting task than it would take to complete a reading task. During this study participants attempted to process incongruent and congruent stimuli while reporting the time it took to complete each task. Processing the incongruent stimuli required that participants focus on counting the numbers while fighting the inclination to read the numbers. The results showed that this active process produced longer reaction times for the incongruent task. These findings suggest that interfering stimuli are in competition with non-automatic stimuli to produce verbal output.
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Would practice effect Stroop interference and if so what would this tell us about the Stroop Effect (MacLeod, 1991)? This question was investigated by having participants learn names of Armenian letters and then read the small English and Armenian letters that were composed to form large English and Armenian letters respectively (McLeod, 1991). The results provided evidence that interference was the same for both English (practiced) and Armenian letters (McLeod, 1991). Why then does automatic reading make one susceptible to the Stroop Effect? A possible explanation is attention. During automatic processing, more attention goes to processing the information in dimension a than in dimension b. Processing and naming ink color requires more attention than reading, and so reading will cause interference because it requires less attention (McLeod,…show more content…
In his study using distractor words with similar meanings Finkbeiner (2006) saw that when these words were masked there were obvious facilitating effects (Finkbeiner, 2006). Similarly, results showed that during congruent conditions, congruent stimuli facilitate or improve performance on the Stroop task so that the participant responds faster to congruent stimuli. However, despite its apparent prevalence facilitation does not occur as much as interference (Brown, 2011). Previous research demonstrated that interference and facilitation could be decoupled (McLeod, 1991). When the condition using pseudohomophones (blue and bloo) was compared to incongruent conditions there was interference for both conditions but no facilitation for the pseudohomophones (McLeod,
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