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The simplest complete model of choice response time: linear ballistic accumulation


Brown, SD and Heathcote, A, The simplest complete model of choice response time: linear ballistic accumulation, Cognitive psychology, 57, (3) pp. 153-78. ISSN 0010-0285 (2007) [Refereed Article]

DOI: doi:10.1016/j.cogpsych.2007.12.002


We propose a linear ballistic accumulator (LBA) model of decision making and reaction time. The LBA is simpler than other models of choice response time, with independent accumulators that race towards a common response threshold. Activity in the accumulators increases in a linear and deterministic manner. The simplicity of the model allows complete analytic solutions for choices between any number of alternatives. These solutions (and freely-available computer code) make the model easy to apply to both binary and multiple choice situations. Using data from five previously published experiments, we demonstrate that the LBA model successfully accommodates empirical phenomena from binary and multiple choice tasks that have proven difficult for other theoretical accounts. Our results are encouraging in a field beset by the tradeoff between complexity and completeness.

Item Details

Item Type:Refereed Article
Research Division:Psychology
Research Group:Cognitive and computational psychology
Research Field:Decision making
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in psychology
UTAS Author:Heathcote, A (Professor Andrew Heathcote)
ID Code:99783
Year Published:2007
Web of Science® Times Cited:656
Deposited By:Medicine
Deposited On:2015-04-09
Last Modified:2015-05-11

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