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ERIC Number: EJ943275
Record Type: Journal
Publication Date: 2011-Dec
Pages: 29
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0010-0285
Diffusion Models of the Flanker Task: Discrete versus Gradual Attentional Selection
White, Corey N.; Ratcliff, Roger; Starns, Jeffrey J.
Cognitive Psychology, v63 n4 p210-238 Dec 2011
The present study tested diffusion models of processing in the flanker task, in which participants identify a target that is flanked by items that indicate the same (congruent) or opposite response (incongruent). Single- and dual-process flanker models were implemented in a diffusion-model framework and tested against data from experiments that manipulated response bias, speed/accuracy tradeoffs, attentional focus, and stimulus configuration. There was strong mimicry among the models, and each captured the main trends in the data for the standard conditions. However, when more complex conditions were used, a single-process spotlight model captured qualitative and quantitative patterns that the dual-process models could not. Since the single-process model provided the best balance of fit quality and parsimony, the results indicate that processing in the simple versions of the flanker task is better described by gradual rather than discrete narrowing of attention. (Contains 11 figures and 9 tables.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A