Latency and accuracy of discriminations of odor quality between binary mixtures and their components.

Latency and accuracy of discriminations of odor quality between binary mixtures and their components.
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二元混合物及其成分之间气味质量辨别的延迟和准确性。

DOI:
10.1093/chemse/25.3.247
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发表时间:
2000
期刊:
影响因子:
3.5
通讯作者:
Cain,WS
Cain,WS
中科院分区:
心理学4区
文献类型:
--
作者:
Wise,PM;Cain,WS

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受试者对气味质量进行定时的、相同-不同的辨别,具有以下主要发现:(i)潜伏期反映了准确性,具有困难的辨别,即50-50种混合物及其组分之间的辨别,比不太困难的辨别,即未混合的化学品之间的辨别需要更多的时间。这一发现证明了潜伏期作为定性相似性的度量的表面有效性。(ii)延迟提供了更好的分辨率对气味比错误的歧视。这一发现证明了收集响应时间的实用性。(iii)之前测试过的气味之间基于潜伏期的相似性预测了尚未测试过的气味之间的相似性。这一发现证明了内部/预测有效性。(iv)假设差分策略的信号检测模型最好地描述了错误的模式。受试者似乎对质量做出了相对判断。(v)最后,基于潜伏期的混合物及其组分之间的相似性证明了加和性。这一发现表明,二元混合物落在“气味空间”中连接其组分的直线上。
Subjects made timed, same–different discriminations of odor quality, with the following principal findings: (i) latency reflected accuracy, with difficult discriminations, i.e. those between 50–50 mixtures and their components, requiring more time than less difficult discriminations, i.e. those between unmixed chemicals. This finding demonstrated the face validity of latency as a measure of qualitative similarity. (ii) Latency provided better resolution among pairs of odors than did errors of discrimination. This finding demonstrated the utility of collecting response times. (iii) Latency-based similarities among odors tested previously predicted similarities among pairs not yet tested. This finding demonstrated internal/predictive validity. (iv) A signal detection model assuming a differencing strategy best described the pattern of errors. Subjects appeared to make relative judgements regarding quality. (v) Finally, latency-based similarities between mixtures and their components demonstrated additivity. This finding suggested that binary mixtures fall on straight lines connecting their components in ‘odor-space’.
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