Shepherd Daniel, Hautus Michael J, Hutchinson Hamish
J Acoust Soc Am. 2008 Nov;124(5):EL302-7. doi: 10.1121/1.2987467.
Psychometric functions collected from difference discrimination tasks typically have slopes near 1, whereas those from increment detection tasks have slopes near 2. Experiments exploring the effect of stimulus configuration on the psychometric function were undertaken. Some stimuli were configured to conform to difference discrimination and increment detection tasks, while other "hybrid" stimulus configurations had physical properties associated with both tasks. The results suggest that these hybrid configurations may have psychophysical properties that fall in between those found for difference discrimination and increment detection tasks.
从差异辨别任务中收集到的心理测量函数的斜率通常接近1，而从增量检测任务中收集到的心理测量函数的斜率接近2。我们进行了一些实验来探究刺激配置对心理测量函数的影响。一些刺激被配置为符合差异辨别和增量检测任务，而其他“混合”刺激配置则具有与这两个任务相关的物理特性。结果表明，这些混合配置可能具有介于差异辨别和增量检测任务中发现的心理物理特性之间的特性。
