Psychometric validity of the sum score of the Sniffin' Sticks-Extended Test.

IF 2.8 4区 心理学 Q1 BEHAVIORAL SCIENCES Chemical Senses Pub Date : 2024-01-01 DOI:10.1093/chemse/bjae032
Eva Tolomeo, Carla Masala, Antonio Aversa, Giancarlo Ottaviano, Flavia Gasperi, Leonardo Menghi, Valentina Parma, Marco Tullio Liuzza
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Abstract

A common tool to measure olfactory function is the Sniffin' Sticks Test extended version (SSET). The SSET evaluates olfactory ability by summing the scores of three subtests: Threshold, Discrimination, and Identification. Recent meta-scientific literature revealed that many psychometric instruments currently in use have not been adequately validated, leading to a measurement crisis that raises concerns about the validity of the conclusions drawn with these instruments. Two examples of the measurement crisis are (i) the use of sum scores without testing their assumptions (e.g. unidimensionality and tau-equivalence), which indicate that all subtests have the same, stable relationship with their underlying construct, and (ii) the lack of assessment of measurement invariance across groups. Here, we aim to investigate the unidimensionality and tau-equivalence assumptions, internal consistency, and measurement invariance of sex and age groups of the SSET. We tested 988 (555 females, mean ± SD: 39.75 ± 18.60 years) participants with the Italian version of the SSET. The tau-equivalent model demonstrated excellent fit indices (CFI robust = 1, TLI robust = 1, RMSEA robust = 0, SRMR = 0.013), which best explain the data, indicating that all subtests are equally important in measuring olfactory function, but not necessarily equally precise. The results also revealed full measurement invariance across age groups and configural, partial metric, and scalar invariance across sexes, indicating that the use of latent means to compare sex groups should be chosen over raw scores. However, the SSET demonstrated moderate internal consistency. Future studies should clarify whether the reliability of the SSET can be increased.

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嗅棒扩展测试总分的心理测量有效性。
嗅觉棒测试扩展版(SSET)是测量嗅觉功能的常用工具。SSET 通过将三个子测试的分数相加来评估嗅觉能力:阈值、辨别和识别。最近的元科学文献显示,目前使用的许多心理测量工具都没有经过充分验证,从而导致了测量危机,使人们对使用这些工具得出的结论的有效性产生了担忧。测量危机的两个例子是:i) 使用总分而不测试其假设(如单维性和 tau-等价性),这表明所有子测试与其基本结构具有相同的、稳定的关系;ii) 缺乏对跨组测量不变性的评估。在此,我们旨在研究 SSET 的单维性和头等性假设、内部一致性以及性别和年龄组的测量不变性。我们使用意大利语版 SSET 对 988 名参与者(555 名女性,平均年龄(±SD):39.75±18.60 岁)进行了测试。tau等效模型显示了极佳的拟合指数(CFI稳健性=1,TLI稳健性=1,RMSEA稳健性=0,SRMR=.013),能够最好地解释数据,表明所有子测验在测量嗅觉功能方面同等重要,但不一定同等精确。结果还显示了不同年龄组之间的完全测量不变性,以及不同性别之间的构型、部分度量和标度不变性,这表明在比较性别组时,应选择使用潜在平均值,而不是原始分数。不过,SSET 显示出中等程度的内部一致性。未来的研究应明确是否可以提高 SSET 的可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chemical Senses
Chemical Senses 医学-行为科学
CiteScore
8.60
自引率
2.90%
发文量
25
审稿时长
1 months
期刊介绍: Chemical Senses publishes original research and review papers on all aspects of chemoreception in both humans and animals. An important part of the journal''s coverage is devoted to techniques and the development and application of new methods for investigating chemoreception and chemosensory structures.
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