Creelman C D, Macmillan N A
J Exp Psychol Hum Percept Perform. 1979 Feb;5(1):146-56. doi: 10.1037//0096-1523.5.1.146.
Two auditory discrimination tasks were thoroughly investigated: discrimination of frequency differences from a sinusoidal signal of 200 Hz and discrimination of differences in relative phase of mixed sinusoids of 200 Hz and 400 Hz. For each task psychometric functions were constructed for three observers, using nine different psychophysical measurement procedures. These procedures included yes-no, two-interval forced-choice, and various fixed- and variable-standard designs that investigators have used in recent years. The data showed wide ranges of apparent sensitivity. For frequency discrimination, models derived from signal detection theory for each psychophysical procedure seem to account for the performance differences. For phase discrimination the models do not account for the data. We conclude that for some discriminative continua the assumptions of signal detection theory are appropriate, and underlying sensitivity may be derived from raw data by appropriate transformations. For other continua the models of signal detection theory are probably inappropriate; we speculate that phase might be discriminable only on the basis of comparison or change and suggest some tests of our hypothesis.
辨别来自200赫兹正弦信号的频率差异，以及辨别200赫兹和400赫兹混合正弦波的相对相位差异。对于每项任务，使用九种不同的心理物理学测量程序为三名观察者构建了心理测量函数。这些程序包括是-否、双间隔强制选择以及研究人员近年来使用的各种固定和可变标准设计。数据显示出明显的敏感性范围很广。对于频率辨别，从信号检测理论导出的针对每种心理物理学程序的模型似乎可以解释性能差异。对于相位辨别，这些模型无法解释数据。我们得出结论，对于某些辨别连续体，信号检测理论的假设是合适的，潜在敏感性可以通过适当变换从原始数据中推导出来。对于其他连续体，信号检测理论的模型可能不合适；我们推测相位可能仅基于比较或变化才可辨别，并提出了一些对我们假设的测试。
