Morein-Zamir Sharon, Meiran Nachshon
University of British Columbia, Vancouver, Canada.
Q J Exp Psychol A. 2003 Apr;56(3):469-89. doi: 10.1080/02724980244000495.
The present study introduces a continuous tracking procedure to investigate cognitive stopping in individual trials. Our measure of stopping performance had a mean similar to mean stopping times estimated in the stop signal paradigm, suggesting a common underlying process. Additional findings indicate that stopping performance and tracking performance were dissociable. First, while stopping times were primarily affected by stop signal modality, tracking performance was primarily affected by tracking difficulty. Second, tracking performance influenced tracking but not stopping in immediately following trials. Stopping influenced neither tracking performance nor stopping in immediately following trials. Finally, there was no correlation between tracking performance and stopping performance, or any dependency between them as found in the conditional means.
本研究引入了一种连续跟踪程序，以调查个体试验中的认知停止情况。我们的停止表现测量结果的平均值与在停止信号范式中估计的平均停止时间相似，这表明存在一个共同的潜在过程。其他研究结果表明，停止表现和跟踪表现是可分离的。首先，虽然停止时间主要受停止信号模态的影响，但跟踪表现主要受跟踪难度的影响。其次，跟踪表现在紧接着的试验中影响跟踪，但不影响停止。停止既不影响跟踪表现，也不影响紧接着的试验中的停止。最后，跟踪表现与停止表现之间没有相关性，也不存在条件均值中发现的它们之间的任何依存关系。
