Brown Scott D, Heathcote Andrew
School of Psychology, University of Newcastle, Callaghan, NSW 2308, Australia.
Cogn Psychol. 2008 Nov;57(3):153-78. doi: 10.1016/j.cogpsych.2007.12.002. Epub 2008 Feb 20.
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.
我们提出了一种决策和反应时间的线性弹道累加器（LBA）模型。LBA比其他选择反应时间模型更简单，具有独立的累加器，它们朝着共同的反应阈值竞争。累加器中的活动以线性和确定性的方式增加。该模型的简单性允许对任意数量的备选方案之间的选择进行完整的解析解。这些解（以及免费提供的计算机代码）使该模型易于应用于二元和多项选择情况。利用之前发表的五个实验的数据，我们证明LBA模型成功地解释了二元和多项选择任务中的经验现象，而这些现象已被证明对其他理论解释来说是困难的。在一个受复杂性和完整性之间权衡困扰的领域，我们的结果令人鼓舞。
