OBSERVER EFFICIENCY AND WEIGHTS IN A MULTIPLE OBSERVATION TASK
OBSERVER EFFICIENCY AND WEIGHTS IN A MULTIPLE OBSERVATION TASK
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DOI：
10.1121/1.399962
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发表时间：
1990-07-01
影响因子：
2.4
通讯作者：
BERG, BG
中科院分区：
文献类型：
--
作者：
BERG, BG
一个七个音调的序列，来自两个分布中的一个的样本在平均频率上不同，被呈现给试图报告哪个分布被采样的观察者。估计获得的权重或重要性给予每个音调作为其时间位置的函数。在五个实验中，通过改变分布的方差来改变信息的可靠性;具有高可靠性的音调从具有相对较小方差的分布中采样，而具有低可靠性的音调从具有相对较大方差的分布中采样。结果表明，当音调具有相等的可靠性而不是不相等的可靠性时，以及当最可靠的音调具有较大的强度时，观察值的加权更有效。其他结果表明，最强烈的音调往往得到最大的权重，即使这些音调的可靠性最低。
A sequence of seven tones, samples from one of two distributions differing in mean frequency is presented to observers who try to report which distribution was sampled. Estimates are obtained of the weight or importance given to each tone as a function of its temporal position. In five experiments, the reliability of the information is varied by changing the variance of the distributions; tones with high reliability are sampled from distributions with relatively small variance, whereas tones with low reliability are sampled from distributions with relatively large variance. Results show that the observations are weighted more efficiently when the tones have equal rather than unequal reliability, and when the most reliable tones have the greater intensity. Additional results show that the most intense tones often receive the greatest weight, even when those tones have the least reliability.