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Estimating across-trial variability parameters of the Diffusion Decision Model: Expert advice and recommendations

Boehm, U; Annis, J; Frank, MJ; Hawkins, GE; Heathcote, A; Kellen, D; Krypotos, A-M; ... Wagenmakers, E-J; + view all (2018) Estimating across-trial variability parameters of the Diffusion Decision Model: Expert advice and recommendations. Journal of Mathematical Psychology , 87 pp. 46-75. 10.1016/j.jmp.2018.09.004. Green open access

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Abstract

For many years the Diffusion Decision Model (DDM) has successfully accounted for behavioral data from a wide range of domains. Important contributors to the DDM’s success are the across-trial variability parameters, which allow the model to account for the various shapes of response time distributions encountered in practice. However, several researchers have pointed out that estimating the variability parameters can be a challenging task. Moreover, the numerous fitting methods for the DDM each come with their own associated problems and solutions. This often leaves users in a difficult position. In this collaborative project we invited researchers from the DDM community to apply their various fitting methods to simulated data and provide advice and expert guidance on estimating the DDM’s across-trial variability parameters using these methods. Our study establishes a comprehensive reference resource and describes methods that can help to overcome the challenges associated with estimating the DDM’s across-trial variability parameters.

Type: Article
Title: Estimating across-trial variability parameters of the Diffusion Decision Model: Expert advice and recommendations
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jmp.2018.09.004
Publisher version: http://dx.doi.org/10.1016/j.jmp.2018.09.004
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Diffusion Decision Model, Across-trial variability parameters, Parameter estimation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology
URI: https://discovery.ucl.ac.uk/id/eprint/10107873
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