Gibson J M, Watkins M J
Department of Psychology, Grinnell College, IA 50112.
Am J Psychol. 1991 Fall;104(3):439-46.
An experiment is reported in which subjects first heard a list of words and then tried to identify these same words from degraded utterances. Paralleling previous findings in the visual modality, the probability of identifying a given utterance was reduced when the utterance was immediately preceded by other, more degraded, utterances of the same word. A second experiment replicated this "cue-depreciation effect" and in addition found the effect to be weakened, if not eliminated, when the target word was not included in the initial list or when the test was delayed by two days.
报告了一项实验,在该实验中,受试者首先听一组单词,然后试图从语音清晰度降低的话语中识别出这些相同的单词。与视觉模式下先前的研究结果相似,当一个特定话语之前紧接着出现同一个单词的其他语音清晰度更低的话语时,识别该话语的概率会降低。第二个实验重复了这种“线索贬值效应”,此外还发现,当目标单词未包含在初始列表中或测试推迟两天时,该效应会减弱,甚至消除。