Task conflict in the Stroop task: When Stroop interference decreases as Stroop facilitation increases in a low task conflict context.

Parris, B., 2014. Task conflict in the Stroop task: When Stroop interference decreases as Stroop facilitation increases in a low task conflict context. Frontiers in Psychology, 5, 1182 - .

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DOI: 10.3389/fpsyg.2014.01182

Abstract

In the present study participants completed two blocks of the Stroop task, one in which the response-stimulus interval (RSI) was 3500 ms and one in which RSI was 200 ms. It was expected that, in line with previous research, the shorter RSI would induce a low Task Conflict context by increasing focus on the color identification goal in the Stroop task and lead to a novel finding of an increase in facilitation and simultaneous decrease in interference. Such a finding would be problematic for models of Stroop effects that predict these indices of performance should be affected in tandem. A crossover interaction is reported supporting these predictions. As predicted, the shorter RSI resulted in incongruent and congruent trial reaction times (RTs) decreasing relative to a static neutral baseline condition; hence interference decreased as facilitation increased. An explanatory model (expanding on the work of Goldfarb and Henik, 2007) is presented that: (1) Shows how under certain conditions the predictions from single mechanism models hold true (i.e., when Task conflict is held constant); (2) Shows how it is possible that interference can be affected by an experimental manipulation that leaves facilitation apparently untouched; and (3) Predicts that facilitation cannot be independently affected by an experimental manipulation.

Item Type:Article
ISSN:1664-1078
Uncontrolled Keywords:Stroop ; facilitation ; goal ; interference ; task conflict
Subjects:UNSPECIFIED
Group:Faculty of Science and Technology
ID Code:21586
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:03 Dec 2014 12:54
Last Modified:03 Dec 2014 12:54

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