Consciousness Lab, Institute of Psychology, Jagiellonian University in Krakow, Poland.
Consciousness Lab, Institute of Psychology, Jagiellonian University in Krakow, Poland.
Conscious Cogn. 2021 Oct;95:103197. doi: 10.1016/j.concog.2021.103197. Epub 2021 Aug 29.
The Perceptual Awareness Scale (PAS) is often used to probe conscious experience, but the assumptions behind the scale and its validity are rarely tested. Using a continuous colour estimation task to assess perceptual quality, we focus on how well PAS follows perceptual quality and how the presence of the estimation task affects PAS ratings. We varied the number and presentation time of stimuli in a simultaneous presentation and target position in a sequential presentation. In all experiments, PAS rating closely followed colour precision. However, it was affected by task-induced response bias, even when the possible task difficulty was judged, without performing the task itself. Still, this bias was only observed on the absolute rating level rather than the scale's ability to capture changes in perceptual quality. Reported studies shed light on factors influencing scales outside of the scale formulation and construction.
知觉意识量表（PAS）常用于探测意识体验，但该量表背后的假设及其有效性很少得到检验。我们使用连续颜色估计任务来评估知觉质量，关注 PAS 如何跟随知觉质量，以及估计任务的存在如何影响 PAS 评分。我们在同时呈现中改变了刺激的数量和呈现时间，在顺序呈现中改变了目标位置。在所有实验中，PAS 评分都与颜色精度密切相关。然而，它受到任务引起的反应偏差的影响，即使在判断可能的任务难度时也是如此，而无需执行任务本身。尽管如此，这种偏差仅在绝对评分水平上观察到，而不是在量表捕捉知觉质量变化的能力上。已报道的研究揭示了影响量表制定和构建之外的因素。
