University of Canterbury, Chirstchurch, New Zealand.
Department of Psychology, George Mason University, 4400 University Drive, 3F5, Fairfax, VA, 22030, USA.
Psychol Res. 2024 Feb;88(1):81-90. doi: 10.1007/s00426-023-01847-3. Epub 2023 Jun 15.
In the current investigation, we modified the high Go, low No-Go Sustained Attention to Response Task (SART) by replacing the single response on Go trials with a dual response to increase response uncertainty. In three experiments, a total of 80 participants completed either the original SART with no response uncertainty regarding the Go stimuli, or versions of the dual response SART in which response probabilities for the two possible responses to the Go stimuli varied from 0.9-0.1, 0.7-0.3, to 0.5-0.5. This resulted in a scale of increasing response uncertainty based on information theory to the Go stimuli. The probability of No-Go withhold stimuli was kept.11 in all experiments. Using the Signal Detection Theory perspective proposed by Bedi et al. (Psychological Research: 1-10, 2022), we predicted that increasing response uncertainty would result in a conservative response bias shift, noted by decreased errors of commission and slower response times to both Go and No-Go stimuli. These predictions were verified. The errors of commission in the SART may not be a measures of conscious awareness per se, but instead indicative of the level of participant trigger happiness-the willingness to respond quickly.
在本次研究中，我们通过用双重反应取代 Go 试次上的单一反应，从而对高 Go、低无 Go 持续注意反应任务（SART）进行了修改，以增加反应不确定性。在三个实验中，总共有 80 名参与者完成了原始的 SART，或者是两种不同的双重反应 SART，其中两种可能的 Go 刺激的反应概率分别为 0.9-0.1、0.7-0.3 和 0.5-0.5。这导致基于 Go 刺激的信息理论的反应不确定性程度呈递增趋势。在所有实验中，No-Go 抑制刺激的概率均保持在 0.11。我们使用 Bedi 等人（Psychological Research: 1-10, 2022）提出的信号检测理论视角进行预测，即增加反应不确定性将导致保守的反应偏差转移，表现为对 Go 和 No-Go 刺激的错误减少和反应时间变慢。这些预测得到了验证。SART 中的错误可能本身不是有意识意识的衡量标准，而是表明参与者触发快乐程度的指标——快速反应的意愿。
