ABSTRACT Category rating is a procedure commonly used to evaluate visual discomfort due to glare. One recommended step for good practise in a category rating procedure is to use a pre-trial demonstration (PTD) of the range of stimuli to be experienced. However, PTD have rarely, if at all, been used in past research on discomfort glare. In this study, two experiments were conducted to test the influence of the PTD on evaluations of discomfort due to glare. In the first experiment participants evaluated four glare source luminances with, and without, a PTD. The results suggest that using a PTD increased the reported degree of discomfort perceived for the same glare setting, although this may depend on the manner in which the PTD is presented. In the second experiment, participants evaluated four glare source luminances using PTD with three different luminance ranges: the results suggest this had significant effect on discomfort evaluations in that evaluations of discomfort were lower when a higher luminance range was used. Along with other recent studies, these findings suggest a need to derive a more robust procedure for measuring the discomfort due to glare.

中文翻译：

---

预试范围演示对使用眩光引起的不适的类别评级的主观评估的影响

摘要 类别评级是一种常用于评估因眩光引起的视觉不适的程序。类别评级程序中良好实践的一个推荐步骤是使用要体验的刺激范围的预试验演示 (PTD)。然而，在过去的不适眩光研究中，PTD 很少使用，如果有的话。在这项研究中，进行了两个实验来测试 PTD 对眩光引起的不适评估的影响。在第一个实验中，参与者评估了有和没有 PTD 的四种眩光源亮度。结果表明，使用 PTD 会增加报告的相同眩光设置下感知到的不适程度，尽管这可能取决于 PTD 的呈现方式。在第二个实验中，参与者使用具有三个不同亮度范围的 PTD 评估了四种眩光源亮度：结果表明这对不适评估有显着影响，因为当使用较高的亮度范围时，对不适的评估较低。连同最近的其他研究，这些发现表明需要推导出更强大的程序来测量由眩光引起的不适。