- Title
- Racing against the clock: evidence-based vs. time-based decisions
- Creator
- Hawkins, Guy E.; Heathcote, Andrew
- Relation
- ARC.DE17010017 http://purl.org/au-research/grants/arc/DE170100177
- Relation
- Psychological Review Vol. 128, Issue 2, p. 222-263
- Publisher Link
- http://dx.doi.org/10.1037/rev0000259
- Publisher
- American Psychological Association (APA)
- Resource Type
- journal article
- Date
- 2021
- Description
- Classical dynamic theories of decision making assume that responses are triggered by accumulating a threshold amount of information. Recently, there has been a growing appreciation that the passage of time also plays a role in triggering responses. We propose that decision processes are composed of 2 diffusive accumulation mechanisms-1 evidence-based and 1 time-based-that compete in an independent race architecture. We show that this timed racing diffusion model (TRDM) provides a unified, comprehensive, and quantitatively accurate explanation of key decision phenomena-including the effects of implicit and explicit deadlines and the relative speed of correct and error responses under speed-accuracy trade-offs-without requiring additional mechanisms that have been criticized as being ad hoc in theoretical motivation and difficult to estimate, such as trial-to-trial variability parameters, collapsing thresholds, or urgency signals. In contrast, our addition is grounded in a widely validated account of time-estimation performance, enabling the same mechanism to simultaneously account for interval estimation and decision making with an explicit deadline.
- Subject
- decision making; time estimation; cognitive model; response time
- Identifier
- http://hdl.handle.net/1959.13/1452529
- Identifier
- uon:44454
- Identifier
- ISSN:0033-295X
- Language
- eng
- Reviewed
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