An Alternative to Measuring Subjective Workload: Use of SWAT without the Card Sort
An Alternative to Measuring Subjective Workload: Use of SWAT without the Card Sort
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测量主观工作量的替代方法：使用 SWAT（不进行卡片分类）
DOI：
10.1177/154193128803201702
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
P. McInerney
中科院分区：
文献类型：
--
作者：
D. Biers;P. McInerney
主观工作量评估技术(SWAT)的一些应用中的一个主要缺点是管理卡片分类所需的时间。还有一些不需要卡片分类的从SWAT工具形成工作量组合的替代方法(即，三个比例表的简单总和或从多变量统计得出的组合)。本研究比较了这些替代SWAT综合衡量指标与需要卡片分类的典型SWAT联合衡量标准的敏感度。研究分为两组，受试者在12个任务难度水平下进行连续再认任务。一组(任务前)在参与任务之前进行卡片分类，而另一组(任务后组)在任务完成后完成卡片分类。结果表明，卡片类型的放置不影响SWAT的三个维度上的任务等级，也不影响三个工作负荷组合的相对敏感度。研究发现，这三种综合测量方法对任务要求都同样敏感。这些结果表明，SWAT仪器可以用于有效地测量工作负荷，而不必执行卡片分类。
One major drawback in some applications of the Subjective Workload Assessment Technique (SWAT) is the time required to administer the card sort. There are alternative methods of forming a workload composite from the SWAT instrument (i.e., a simple sum of the three scales or composite derived from multivariate statistics) which do not require the card sort. The present study compared the sensitivity of these alternative SWAT composite measures with the typical SWAT conjoint scaling metric which requires the card sort. A two group study was conducted in which subjects engaged in a continuous recognition task under twelve levels of task difficulty. One group (Pre-Task), performed the card sort prior to engaging in the task whereas in the other group (Post-Task) completed the card sort subsequent to task performance. Results indicated that placement of the card sort did not affect the task ratings on the three dimensions of SWAT nor did it affect the relative sensitivity of the three workload composites. All three composite measures were found equally sensitive to the task demands. These results indicate that the SWAT instrument can be used to effectively measure workload without having to perform the card sort.