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A Comment on the Revised Diffusion Model for Conflict Tasks (RDMC)

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Specialty Psychology
Date 2024 Oct 24
PMID 39448516
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Abstract

In conflict tasks, such as the Simon, Eriksen flanker, or Stroop task, a relevant and an irrelevant feature indicate the same or different responses in congruent and incongruent trials, respectively. The congruency effect refers to faster and less error-prone responses in congruent relative to incongruent trials. Distributional analyses reveal that the congruency effect in the Simon task becomes smaller with increasing RTs, reflected by a negative-going delta function. In contrast, for other tasks, the delta function is typically positive-going, meaning that congruency effects become larger with increasing RTs. The Diffusion Model for Conflict tasks (DMC; Ulrich et al., Cognitive Psychology, 78, 148-174, 2015) accounts for this by explicitly modeling the information accumulated from the relevant and the irrelevant features and attributes negatively- versus positively-sloped delta functions to different peak times of a pulse-like activation resulting from the task-irrelevant feature. Because the underlying function implies negative drift rates, Lee and Sewell (Psychonomic Bulletin & Review, 31(5), 1-31, 2024) recently questioned this assumption and suggested their Revised Diffusion Model for Conflict tasks (RDMC). We address three issues regarding RDMC compared to DMC: (1) The pulse-like function is not as implausible as Lee and Sewell suggest. (2) RDMC itself comes with a questionable assumption that different parameters are required for congruent and incongruent trials. (3) Moreover, we present data from a new parameter recovery study, suggesting that RDMC lacks acceptable recovery of several parameters (in particular compared to DMC). In this light, we discuss RDMC as not (yet) a revised version of DMC.

References
1.
Anderson M, Bjork R, Bjork E . Remembering can cause forgetting: retrieval dynamics in long-term memory. J Exp Psychol Learn Mem Cogn. 1994; 20(5):1063-87. DOI: 10.1037//0278-7393.20.5.1063. View

2.
Bauml K, Pastotter B, Hanslmayr S . Binding and inhibition in episodic memory-cognitive, emotional, and neural processes. Neurosci Biobehav Rev. 2009; 34(7):1047-54. DOI: 10.1016/j.neubiorev.2009.04.005. View

3.
Botvinick M, Braver T, Barch D, Carter C, Cohen J . Conflict monitoring and cognitive control. Psychol Rev. 2001; 108(3):624-52. DOI: 10.1037/0033-295x.108.3.624. View

4.
de Jong R, Liang C, Lauber E . Conditional and unconditional automaticity: a dual-process model of effects of spatial stimulus-response correspondence. J Exp Psychol Hum Percept Perform. 1994; 20(4):731-50. DOI: 10.1037//0096-1523.20.4.731. View

5.
Evans N, Servant M . A model-based approach to disentangling facilitation and interference effects in conflict tasks. Psychol Rev. 2022; 129(5):1183-1209. DOI: 10.1037/rev0000357. View