Abstract
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.
Original language | English (US) |
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Pages (from-to) | 437-449 |
Number of pages | 13 |
Journal | Judgment and Decision Making |
Volume | 5 |
Issue number | 6 |
State | Published - Oct 1 2010 |
Keywords
- Drift-diffusion model
- Response time
- Value-based choice
ASJC Scopus subject areas
- Decision Sciences(all)
- Applied Psychology
- Economics and Econometrics