自由操作和离散试验检测程序中的刺激辨别力
Stimulus discriminability in free-operant and discrete-trial detection procedures.
作者信息
McCarthy D, Davison M, Jenkins P E
出版信息
J Exp Anal Behav. 1982 Mar;37(2):199-215. doi: 10.1901/jeab.1982.37-199.
Abstract
Six pigeons were trained to discriminate different light intensities in four experimental procedures. Experiment 1 compared stimulus discriminability in a yes-no signal-detection task with discriminability measures obtained from two free-operant procedures. Discriminability estimates were significantly lower in the detection procedure. Experiment 2 showed this lowered discriminability to be a function of the delay between stimulus presentation and the availability of the choice-response keys in the standard detection task. In addition, reinforcement sensitivity was lowest when correct choice responses were intermittently, rather than continuously, reinforced.
摘要
六只鸽子在四个实验程序中接受训练，以区分不同的光强度。实验1在一个是/否信号检测任务中比较了刺激辨别力与从两个自由操作程序中获得的辨别力测量值。在检测程序中，辨别力估计值显著更低。实验2表明，在标准检测任务中，这种降低的辨别力是刺激呈现与选择反应键可用之间延迟的函数。此外，当正确的选择反应是间歇性而非连续性强化时，强化敏感性最低。
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