What is SUS?
The System Usability Scale (SUS) is a widely used tool for measuring the usability of software applications, websites, and other interactive systems. It was created by John Brooke in 1986 and has since become a standard in the field of usability testing.
How does SUS work?
SUS consists of a 10-item questionnaire that is used to gather feedback from users about the usability of a system. Each item is rated on a 5-point Likert scale, ranging from ‘Strongly Disagree’ to ‘Strongly Agree’.
Example of SUS questionnaire:
- I think that I would like to use this system frequently.
- I found the system unnecessarily complex.
- I thought the system was easy to use.
Case Studies:
In a study conducted by a software company, the SUS score for their new mobile app was 75. This high score indicated that users found the app to be highly usable and user-friendly, leading to increased engagement and satisfaction.
Benefits of using SUS:
- Measures overall usability of a system.
- Provides a standardized metric for comparison across different systems.
- Helps identify areas for improvement in the system design.
Statistics:
According to a survey of usability professionals, 68% reported using SUS as a usability testing tool, highlighting its popularity and effectiveness in the industry.
