PEBL Hub — IRB Fact Sheet — 2026-08-23
System Usability Scale
Category:Personality & Rating Scales
Duration:~2 minutes
Parameters:3 configurable parameters: intro/outro screens and customizable system name
Version:1.0
Input:Mouse, Touch
Description
A standardized 10-item questionnaire for assessing the perceived usability of systems, interfaces, and products
The System Usability Scale (SUS) is a widely-used standardized questionnaire for assessing the perceived usability of systems, interfaces, and products. The scale consists of 10 items with five response options from 'Strongly Disagree' to 'Strongly Agree'. The SUS yields a single score ranging from 0 to 100, with higher scores indicating better usability. This implementation presents each question individually with a visual Likert scale interface, recording both responses and response times for each item.
Key Parameters
| do_intro | Show introductory instruction screen (default: 1) |
| do_outro | Show completion screen at end (default: 1) |
| system_name | Use a more descriptive term for the system your are rating (default: the system) |
Example Data Output (1 sample rows)
| subnum | timestamp | q1 | q2 | q3 | q4 | q5 | q6 | q7 | q8 | q9 | q10 | t1 | t2 | t3 | t4 | t5 | t6 | t7 | t8 | t9 | t10 | SUS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15156 | Sat Nov 1 13:54:40 2025 | 5 | 1 | 5 | 1 | 5 | 1 | 5 | 1 | 5 | 1 | 2330 | 533 | 497 | 517 | 523 | 623 | 510 | 513 | 571 | 745 | 100 |
References
Brooke, J. (1996). SUS: A 'quick and dirty' usability scale. In P. W. Jordan, B. Thomas, B. A. Weerdmeester, & I. L. McClelland (Eds.), Usability evaluation in industry (pp. 189-194). London: Taylor & Francis.
Bangor, A., Kortum, P. T., & Miller, J. T. (2008). An empirical evaluation of the System Usability Scale. International Journal of Human-Computer Interaction, 24(6), 574-594.