Department of Experimental Psychology, Heinrich Heine University, Düsseldorf, Nordrhein-Westfalen, Germany.
Ergonomics. 2024 Dec;67(12):2096-2111. doi: 10.1080/00140139.2024.2371061. Epub 2024 Jun 28.
Single-item scales of perceived usability are attractive due to their efficiency and non-verbal scales are attractive because they enable collecting data from individuals irrespective of their language proficiency. We tested experimentally whether single-item verbal and pictorial scales can compete with their 10-item counterparts at reflecting the difference in usability between well-designed and poorly designed systems. = 1079 (Experiment 1) and = 1092 (Experiment 2) participants worked with two systems whose usability was experimentally manipulated. Perceived usability was assessed using the 10-item System Usability Scale, the single-item Adjective Rating Scale, the 10-item Pictorial System Usability Scale and the Pictorial Single-Item Usability Scale. The single-item scales reflect the difference in usability as good as their 10-item counterparts. The pictorial scales are nearly as valid as their verbal counterparts. The single-item Adjective Rating Scale and the Pictorial Single-Item Usability Scale are thus efficient and valid alternatives to their 10-item counterparts.
由于其效率，单项感知可用性量表很有吸引力，而非言语量表则很有吸引力，因为它们可以使数据收集不受个人语言熟练程度的影响。我们通过实验测试了单项言语和图像量表是否可以与它们的 10 项对应量表竞争，以反映精心设计和设计不佳的系统之间在可用性方面的差异。在实验 1 中，有 1079 名参与者，在实验 2 中，有 1092 名参与者使用了两个可用性经过实验操纵的系统。使用 10 项系统可用性量表、单项形容词评定量表、10 项图像系统可用性量表和图像单项可用性量表来评估感知可用性。单项量表可以很好地反映可用性差异，与 10 项量表相当。图像量表几乎与它们的言语量表一样有效。因此，单项形容词评定量表和图像单项可用性量表是其 10 项对应量表的有效且高效的替代方法。
