Differences in our sensory - Invalid comparisons with labeled scales
Differences in our sensory - Invalid comparisons with labeled scales
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DOI：
10.1111/j.0963-7214.2005.00346.x
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发表时间：
2005-06-01
影响因子：
7.2
通讯作者：
Snyder, DJ
中科院分区：
文献类型：
--
作者：
Bartoshuk, LM;Fast, K;Snyder, DJ
人们使用强度描述符来比较感官差异：“我觉得这个味道很重；你觉得浓吗？”这些比较具有欺骗性，因为它们假设强度描述符（如strong）对每个人都表示相同的绝对感知强度。这种假设是错误的。视觉模拟量表和类别量表用强度描述符标记，当这些描述符表示的绝对感知强度在组间存在系统差异时，跨组比较将无效。我们已经通过对味觉的研究探索了这个问题。当强度描述符被错误地假定为具有普遍意义时，真正的差异可能会被削弱、废除或逆转。解决这个问题的方法之一是表达与不相关的标准相关的兴趣感；本标准的任何变化在各组之间都是等效的，允许有效的组比较。检测和纠正这些测量误差的重要性不仅局限于感官比较，也适用于享乐比较。
People use intensity descriptors to compare sensory differences: "This tastes strong to me; is it strong to you?" These comparisons are deceptive because they assume that intensity descriptors like strong denote the same absolute perceived intensities to everyone. This assumption is false. Visual-analogue and category scales are labeled with intensity descriptors, and whenever there are systematic differences across groups in the absolute perceived intensity denoted by these descriptors, across-group comparisons will be invalid. We have explored this problem using studies of taste perception. When intensity descriptors are falsely assumed to have universal meaning, real differences can be blunted, abolished, or reversed. One solution to this problem is to express sensations of interest relative to an unrelated standard; any variation in this standard will be equivalent across groups, allowing valid group comparisons. The importance of detecting and correcting these measurement errors is not limited to sensory comparisons, but applies to hedonic comparisons as well.