Peak shift revisited: a test of alternative interpretations.
Peak shift revisited: a test of alternative interpretations.
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重新审视峰移：替代解释的测试。
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
E. Wiertelak
中科院分区：
文献类型：
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作者：
David R. Thomas;Kelly Mood;S. Morrison;E. Wiertelak
在实验1中，2组人类受试者被训练对2种光强度刺激S2或S4中的1种作出反应，然后用从S1到S11的随机递增值系列测试泛化。两组，包括训练对较暗值作出反应的那组，都显示出峰值向更明亮、更中心的测试刺激移动。在实验2中，使用线角刺激，S+和S-之间的差异的大小和测试刺激的范围，延伸到S+是不同的。S（+）-S-分离越大，范围越大，获得的峰位移越大。在实验3中，训练涉及由2个S+值包围的S-（线角度），测试对称于训练值，并且覆盖窄或宽的范围。宽范围产生了更大的峰位移在两个方向从S-。所有3个实验都支持人类受试者的维内辨别学习和泛化测试表现的适应水平解释。对动物的相关研究表明存在类似的过程。
In Experiment 1, 2 groups of human subjects were trained to respond to 1 of 2 light intensity stimuli, S2 or S4, and then were tested for generalization with a randomized series of increasing values from S1 to S11. Both groups, including the group trained to respond to dimmer value, showed peak shifts to a brighter more centrally located test stimulus. In Experiment 2, which used line angle stimuli, both the size of the difference between S+ and S- and the range of test stimuli that extended beyond S+ were varied. The larger the S(+)-S- separation and the larger the range, the greater was the peak shift obtained. In Experiment 3, training involved an S- (line angle) surrounded by 2 S+ values with testing symmetrical about the training values and covering either a narrow or a wide range. The wide range produced greater peak shifts in both directions from S-. All 3 experiments support an adaptation-level interpretation of intradimensional discrimination learning and generalization test performance in human subjects. Related work with animals suggests the presence of similar processes.