Milosavljevic, Milica and Malmaud, Jonathan and Huth, Alexander and Koch, Christof and Rangel, Antonio (2010) The drift diffusion model can account for value-based choice response times under high and low time pressure. Judgment and Decision Making, 5 (6). pp. 437-449. ISSN 1930-2975. http://resolver.caltech.edu/CaltechAUTHORS:20130816-103405233
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An important open problem is how values are compared to make simple choices. A natural hypothesis is that the brain carries out the computations associated with the value comparisons in a manner consistent with the Drift Diffusion Model (DDM), since this model has been able to account for a large amount of data in other domains. We investigated the ability of four different versions of the DDM to explain the data in a real binary food choice task under conditions of high and low time pressure. We found that a seven-parameter version of the DDM can account for the choice and reaction time data with high-accuracy, in both the high and low time pressure conditions. The changes associated with the introduction of time pressure could be traced to changes in two key model parameters: the barrier height and the noise in the slope of the drift process.
|Additional Information:||We gratefully thank the NGA, the NSF and the Mathers and Moore Foundations for funding this research. We also thank Roger Ratcliff for giving us invaluable comments during the review process.|
|Group:||Koch Laboratory, KLAB|
|Subject Keywords:||drift-diffusion model, value-based choice, response time|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||KLAB Import|
|Deposited On:||11 Feb 2012 00:03|
|Last Modified:||23 Sep 2013 23:18|
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