Miller Jeff
University of Otago.
J Exp Psychol Hum Percept Perform. 2017 May;43(5):941-953. doi: 10.1037/xhp0000356. Epub 2017 Mar 2.
Response-selection bottleneck (RSB) models provide an important account of dual-task interference. These models are thought to have difficulty, however, explaining the commonly observed (BCE), which is the finding that the speed of first-task responses depends on their compatibility with later second-task responses. One explanation of this phenomenon is based on a distinction between an early response activation stage and a subsequent response selection stage (e.g., Hommel, 1998). The former stage is thought to be influenced by both tasks and to be responsible for BCEs, whereas the latter stage implements the RSB suggested to explain many aspects of dual-task interference. The present experiments measured lateralized readiness potentials (LRPs) to test predictions of this early response activation account. The results are generally consistent with a distinction between response selection and response activation, but they suggest that BCEs arise because second-task stimuli influence first-task response selection rather than because these stimuli activate the second-task responses with which they are associated. Thus, the results support an account of BCEs that is even more consistent with RSB models than previous accounts. (PsycINFO Database Record
反应选择瓶颈（RSB）模型为双任务干扰提供了重要解释。然而，这些模型被认为难以解释常见的（BCE）现象，即第一任务反应的速度取决于其与后续第二任务反应的兼容性这一发现。对这一现象的一种解释基于早期反应激活阶段和随后的反应选择阶段之间的区分（例如，霍梅尔，1998）。前一阶段被认为受两个任务的影响并对BCE现象负责，而后一阶段实施RSB以解释双任务干扰的许多方面。本实验测量了偏侧化准备电位（LRP）以检验这一早期反应激活解释的预测。结果总体上与反应选择和反应激活之间的区分一致，但结果表明BCE现象的出现是因为第二任务刺激影响了第一任务的反应选择，而不是因为这些刺激激活了与之相关的第二任务反应。因此，这些结果支持了一种对BCE现象的解释，该解释比之前的解释更符合RSB模型。（PsycINFO数据库记录）
