Citation

Gräve E, Bell R, Buchner A. Ergonomics 2024; ePub(ePub): ePub.

Copyright

(Copyright © 2024, Informa - Taylor and Francis Group)

DOI

10.1080/00140139.2024.2371061

PMID

38940285

Abstract

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. N = 1079 (Experiment 1) and N = 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.

Language: en

Keywords

Adjective Rating Scale; perceived usability; Pictorial Single-Item Usability Scale; Pictorial System Usability Scale; System Usability Scale