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Psicologia: teoria e prática

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CALDAS, Ariane Leão et al. Ordem de apresentação de estímulos modula interferências em testes stroop-pareado: um estudo de tempo de reação. Psicol. teor. prat. [online]. 2014, vol.16, n.3, pp. 143-154. ISSN 1516-3687.

In the classic Stroop effect, the time spent to name the color of an incon­gruent stimulus (GREEN in blue) is longer than the time necessary to name the color of a congruent stimulus (BLUE in blue). In the "Stroop matching task", volunteers are instructed to compare attributes of two stimuli, in which one of them is necessarily a Stroop stimulus. Our aim was to investigate whether the order of stimulus presentation can explain some contradictory results and reveal the imposition of high-order cognitive resources in conflict resolution. Our results confirmed that the strategy adopted in the task depended on the order in which stimuli were presented. In the "Stroop-Bar" order, using the interval between stimuli to solve the conflict inherent to the Stroop stimulus is possible, which is otherwise not possible in the "Bar-Stroop" order. However, these strategies cannot explain the discrepancy in the results reported in the literature.

Keywords : attention; reaction time; Stroop; executive function; conflict resolution.

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