当前位置: X-MOL 学术Food Qual. Prefer. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Assessment of Instructions on Panelist Cognitive Framework and Free Sorting Task Results: A Case Study of Cold Brew Coffee
Food Quality and Preference ( IF 5.3 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.foodqual.2020.103889
Leah M. Hamilton , Jacob Lahne

Abstract As the free sorting task becomes more common in sensory science, methodological research is needed to determine best practices for the test. Previous studies have shown that asking attribute-specific, “analytical” questions can bias the answers participants give to later “holistic” questions in a survey. For the free sorting task, this has led researchers to recommend only asking subjects to label or describe groups of products after they have finished sorting, but this approach is not based on empirical research. The present study investigated whether the separation of sorting and labeling steps is necessary by having 80 panelists sort 12 cold brew coffee samples in 3 conditions: labeling and describing the groups afterwards, at the same time, or not at all. Results were analyzed with DISTATIS, Hierarchical DISTATIS, and permutation tests. This work is novel in investigating the effect of labeling instructions on sorting results and provides some interesting insight into sensory impact of coffee bean parameters on cold brew coffees. No configurational differences were found based on the timing of labeling instructions and 38% of panelists labeled their groups without being told, suggesting future researchers may request that subjects label when convenient. While the most distinctive samples were the dark roast coffees, a large subgroup (n = 36) sorted the coffee samples partially based on country of origin. Given the lack of effect from different sorting instructions and the tendency for spontaneous, simultaneous labeling, simultaneous labeling is suggested as best practice for future sorting tasks.

中文翻译:

评估小组成员认知框架和自由分类任务结果的说明:以冷萃咖啡为例

摘要 随着自由分类任务在感官科学中变得越来越普遍,需要方法学研究来确定测试的最佳实践。先前的研究表明,询问特定于属性的“分析”问题会使参与者在调查中对后来的“整体”问题给出的答案产生偏差。对于自由分类任务,这导致研究人员建议仅要求受试者在完成分类后标记或描述产品组,但这种方法不是基于实证研究。本研究通过让 80 名小组成员在 3 种条件下对 12 个冷冲泡咖啡样品进行分类,调查分类和标记步骤的分离是否必要:事后标记和描述组,同时或根本不进行。结果用 DISTATIS、Hierarchical DISTATIS、和置换测试。这项工作在研究标签说明对分类结果的影响方面是新颖的,并提供了一些有趣的见解,了解咖啡豆参数对冷酿咖啡的感官影响。没有发现基于标记说明时间的配置差异,并且 38% 的小组成员在没有被告知的情况下标记了他们的组,这表明未来的研究人员可能会在方便时要求受试者进行标记。虽然最独特的样品是深烘焙咖啡,但一个大的子组 (n = 36) 部分地根据原产国对咖啡样品进行了分类。鉴于不同分拣指令的影响缺乏以及自发、同时标记的趋势,建议将同时标记作为未来分拣任务的最佳实践。这项工作在研究标签说明对分类结果的影响方面是新颖的,并提供了一些有趣的见解,了解咖啡豆参数对冷酿咖啡的感官影响。根据标记说明的时间没有发现配置差异,38% 的小组成员在没有被告知的情况下标记了他们的组,这表明未来的研究人员可能会在方便时要求受试者标记。虽然最独特的样品是深烘焙咖啡,但一个大的子组 (n = 36) 部分地根据原产国对咖啡样品进行了分类。鉴于不同分拣指令的影响缺乏以及自发、同时标记的趋势,建议将同时标记作为未来分拣任务的最佳实践。这项工作在研究标签说明对分类结果的影响方面是新颖的,并提供了一些有趣的见解,了解咖啡豆参数对冷酿咖啡的感官影响。根据标记说明的时间没有发现配置差异,38% 的小组成员在没有被告知的情况下标记了他们的组,这表明未来的研究人员可能会在方便时要求受试者标记。虽然最独特的样品是深烘焙咖啡,但一个大的子组 (n = 36) 部分地根据原产国对咖啡样品进行了分类。鉴于不同分拣指令的影响缺乏以及自发、同时标记的趋势,建议将同时标记作为未来分拣任务的最佳实践。
更新日期:2020-07-01
down
wechat
bug