Definition and Importance of Usability
- Usability refers to the capacity of a system to enable users to perform tasks safely, effectively, and efficiently while enjoying the experience.
- It is the degree to which a software can be used by specified consumers to achieve quantified objectives in a quantified context of use.
- Usability applies to various objects such as software applications, websites, books, tools, machines, processes, and vehicles.
- A usability study can be conducted by usability analysts, designers, technical writers, marketing personnel, and others.
- It is widely used in consumer electronics, communication, and knowledge transfer objects.
- Usability enhances user satisfaction and improves the overall user experience.
- It increases productivity and efficiency by enabling users to accomplish tasks more easily.
- Usability reduces user errors and the need for extensive training.
- It contributes to the success and adoption of software applications and products.
- Usability can lead to cost savings by reducing support and maintenance requirements.
Usability Principles
- Learnability: Users should be able to quickly learn how to use a system or product.
- Efficiency: Users should be able to accomplish tasks with minimal effort and time.
- Memorability: Users should be able to remember how to use a system or product after a period of non-use.
- Error prevention: Systems should be designed to minimize the occurrence of user errors.
- User satisfaction: Systems should provide a positive and enjoyable user experience.
Usability Evaluation Methods
- Heuristic evaluation: Experts evaluate a system based on usability principles.
- User testing: Users perform tasks while their interactions are observed and recorded.
- Surveys and questionnaires: Users provide feedback on their experience with a system.
- Eye tracking: The eye movements of users are tracked to understand their attention and focus.
- A/B testing: Different versions of a system are tested to determine which one performs better.
Usability Challenges
- Accessibility: Ensuring that a system is usable by individuals with disabilities.
- Multilingual support: Designing systems that can be used by users who speak different languages.
- Cross-platform compatibility: Ensuring that a system works well on different devices and operating systems.
- Balancing simplicity and complexity: Designing systems that are easy to use without sacrificing functionality.
- Keeping up with technological advancements: Adapting usability practices to new technologies and trends.
Usability in Different Contexts
- Usability is applicable to various objects such as software applications, websites, books, tools, machines, processes, and vehicles.
- It is widely used in consumer electronics, communication, and knowledge transfer objects.
Usability Data Sources
| Reference | URL |
|---|---|
| Glossary | https://www.alternix.com/blogs/glossary-of-terms/usability |
| Wikipedia | http://en.wikipedia.org/wiki/Usability |
| Wikidata | https://www.wikidata.org/wiki/Q216378 |
| Knowledge Graph | https://www.google.com/search?kgmid=/m/01qb0g |
