Grice G R, Nullmeyer R, Schnizlein J M
J Exp Psychol Hum Percept Perform. 1979 May;5(2):303-14. doi: 10.1037//0096-1523.5.2.303.
Using light onset as the stimulus in simple reaction time (SRT), the effect of stimulus intensity was studied in both between-subjects and within-subjects experimental designs. There was a strong intensity effect in both conditions but no significant interaction between the effect of stimulus intensity and the type of design. This differs from previous results with auditory stimuli where such an interaction has been demonstrated. When the criterion parameters of variable criterion theory were evaluated directly, the only significant effect was greater criterion variability in the between-subjects condition. Theoretical functions describing the growth of sensory strength for each intensity had different starting points and were largely parallel, showing only late temporal divergence. This provides an explanation of the rarity, in the SRT literature, of interactions between visual intensity and criterion variables. Correlations illustrating the relations between reaction time (RT) measures and theoretical criterion parameters are presented. Absence of the predicted relation between intensity and RT variability is evidence against theories relating RT to impulse rate treated as a Poisson process.
在简单反应时（SRT）实验中，以光刺激的开始作为刺激，在被试间和被试内实验设计中研究了刺激强度的效应。在两种条件下都存在强烈的强度效应，但刺激强度效应与设计类型之间没有显著的交互作用。这与先前使用听觉刺激的结果不同，在先前的研究中已经证明了这种交互作用。当直接评估可变标准理论的标准参数时，唯一显著的效应是在被试间条件下标准变异性更大。描述每种强度下感觉强度增长的理论函数有不同的起点，并且在很大程度上是平行的，仅在后期出现时间上的差异。这为视觉强度与标准变量之间的交互作用在SRT文献中很少见提供了解释。文中给出了说明反应时（RT）测量值与理论标准参数之间关系的相关性。强度与RT变异性之间不存在预测的关系，这是反对将RT与作为泊松过程处理的脉冲率相关的理论的证据。
