Diffusion Models of the Flanker Task: Discrete versus Gradual Attentional Selection

Autor/inn/en	White, Corey N.; Ratcliff, Roger; Starns, Jeffrey J.
Titel	Diffusion Models of the Flanker Task: Discrete versus Gradual Attentional Selection
Quelle	In: Cognitive Psychology, 63 (2011) 4, S.210-238 (29 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0010-0285
DOI	10.1016/j.cogpsych.2011.08.001
Schlagwörter	Identification; Responses; Cognitive Processes; Task Analysis; Models; Goodness of Fit; Attention Control + Suchen Sie Ihr Suchwort? Identifikation; Identifizierung; Cognitive process; Kognitiver Prozess; Aufgabenanalyse; Analogiemodell; Aufmerksamkeitstest
Abstract	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.) (As Provided).
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Update	2017/4/10