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The simplest complete model of choice response time: linear ballistic accumulation
journal contributionposted on 2023-05-18, 09:12 authored by Brown, SD, Heathcote, A
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.
Publication titleCognitive psychology
Department/SchoolTasmanian School of Medicine
PublisherAcademic Press Inc Elsevier Science
Place of publication525 B St, Ste 1900, San Diego, USA, Ca, 92101-4495