Valid across-group comparisons with labeled scales: the gLMS versus magnitude matching
Valid across-group comparisons with labeled scales: the gLMS versus magnitude matching
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DOI：
10.1016/j.physbeh.2004.02.033
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发表时间：
2004-08-01
影响因子：
2.9
通讯作者：
Weiffenbach, JM
中科院分区：
文献类型：
--
作者：
Bartoshuk, LM;Duffy, V;Weiffenbach, JM
标记量表通常用于组间比较。标签包括形容词/副词强度描述符（例如，“非常强”）。描述符之间的相对距离基本上是恒定的，但是它们表示的绝对感知强度随着它们所应用的域而变化（例如，“非常强烈”的玫瑰气味比“非常强烈”的头痛要弱），就好像描述符被印在一个弹性尺上，该尺可以压缩或膨胀以适应感兴趣的领域。个体经验的变化也会导致弹性尺的压缩或扩张。味觉因基因而异：超级味觉者感知最强烈的味道;非味觉者，最弱的;中等味觉者，中等的味道。传统标记量表上的味觉强度描述符表示三个组的不同绝对感知强度，使得各组之间的比较无效。幅度匹配通过要求受试者相对于与品味无关的标准（例如，超级味觉者比非味觉者将味觉与更大的声音相匹配）。借用大小匹配的逻辑，我们构建了一个标记的规模使用无关的描述符的味道。我们推断，按照所有感官体验标记的等级来表达口味可能会起作用。我们推广了现有的量表，标签幅度量表（LMS），通过将标签“任何种类的最强可想象的感觉”放在顶部。100名受试者使用广义LMS（gLMS）和幅度匹配评价口味和音调。这两种方法产生了类似的结果，表明gLMS对于非味觉者、中等味觉者和超级味觉者的味觉比较是有效的。(C)2004年由Elsevier Inc.出版
Labeled scales are commonly used for across-group comparisons. The labels consist of adjective/adverb intensity descriptors (e.g., a "very strong"). The relative distances among descriptors are essentially constant but the absolute perceived intensities they denote vary with the domain to which they are applied (e.g., a "very strong" rose odor is weaker than a "very strong" headache), as if descriptors were printed on an elastic ruler that compresses or expands to fit the domain of interest. Variation in individual experience also causes the elastic ruler to compress or expand. Taste varies genetically: super-tasters perceive the most intense tastes; nontasters, the weakest; and medium tasters, intermediate tastes. Taste intensity descriptors on conventional-labeled scales denote different absolute perceived intensities to the three groups making comparisons across the groups invalid. Magnitude matching provides valid comparisons by asking subjects to express tastes relative to a standard not related to taste (e.g., super-tasters match tastes to louder sounds than do nontasters). Borrowing the logic of magnitude matching, we constructed a labeled scale using descriptors unrelated to taste. We reasoned that expressing tastes on a scale labeled in terms of all sensory experience might work. We generalized an existing scale, the Labeled Magnitude Scale (LMS), by placing the label "strongest imaginable sensation of any kind" at the top. One hundred subjects rated tastes and tones using the generalized LMS (gLMS) and magnitude matching. The two methods produced similar results suggesting that the gLMS is valid for taste comparisons across nontasters, medium tasters, and supertasters. (C) 2004 Published by Elsevier Inc.