Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 307 of 333
- Usability Study (Usability Test, Usability Evaluation)
- A research method that evaluates how easily and effectively users can interact with a product, system, or prototype by observing real users performing tasks. Usability studies measure factors such as …
- Usability Testing (Usability Evaluation, User Testing)
- A research method in which representative users attempt realistic tasks with a product or prototype while researchers observe and collect data on effectiveness, efficiency, and satisfaction. In access…
- Usable Accessibility
- Usable accessibility is the principle that meeting technical accessibility standards (such as WCAG compliance) is necessary but not sufficient for ensuring that people with disabilities can effectivel…
- Usage analytics (Telemetry, Interaction logging)
- The collection and analysis of data about how users interact with a technology system in real-world settings, including session duration, feature usage frequency, settings preferences, and interaction…
- Useful Field of View (UFOV, Functional Visual Field)
- The useful field of view (UFOV) is the area of the visual field from which a person can extract information in a single glance without moving their eyes or head. Unlike the anatomical visual field, th…
- User Agency (User Control, User Autonomy)
- The degree to which users maintain control over their interactions with a system, including the ability to make choices, adjust system behavior, override automated decisions, and understand what the s…
- User Agent (Browser, Web Browser)
- In web accessibility, a user agent is any software that retrieves, renders, and facilitates user interaction with web content. This includes mainstream web browsers like Chrome, Firefox, and Safari, a…
- User Agent Accessibility Guidelines (UAAG)
- W3C guidelines that explain how to make user agents—web browsers, media players, and other applications that render web content—accessible to people with disabilities. UAAG covers how user agents shou…
- User Elicitation (Elicitation study, Gesture elicitation study, User-defined gestures)
- A participatory user-research method, widely used in gesture and interaction design, in which end users or domain experts are shown a desired system effect (a "referent" such as "rotate this object") …
- User Empowerment (Design for User Empowerment)
- A design philosophy that prioritizes giving users, particularly people with disabilities, the agency and tools to solve their own problems, customize their experiences, and participate as active creat…
- User Enactment (UE, Experience Prototyping)
- A research method in which participants explore emerging or future technologies through simulated scenarios using physical enactment stages (mockup environments). User enactment combines brainstorming…
- User Engagement Scale (UES, UES-SF)
- A validated self-report questionnaire for measuring user engagement with digital systems across dimensions including focused attention, perceived usability, aesthetic appeal, and reward. Developed by …
- User Experience (UX)
- A person's perceptions and responses resulting from the use or anticipated use of a product, system, or service, encompassing emotions, beliefs, preferences, physical and psychological responses, and …
- User Experience Questionnaire (UEQ, UEQ-S, Short UEQ)
- A standardised self-report instrument, developed by Schrepp and colleagues, that captures a user's subjective impression of a product across dimensions such as attractiveness, efficiency, perspicuity,…
- User Frustration (Computer Frustration, Technology Frustration)
- The emotional response experienced by users when technology fails to meet their expectations or prevents them from completing tasks. User frustration can be caused by errors, confusing interfaces, ina…
- User Interface Agent (Interface Agent, Software Agent, Assistant Agent)
- A software component that observes user behaviour and the state of an application, then unobtrusively offers help — suggestions, shortcuts, summaries, or warnings — to reduce workload or prevent error…
- User Interface Management System (UIMS)
- A software framework that separates user interface presentation and interaction from application logic, allowing the interface to be designed, modified, or replaced independently of the underlying pro…
- User Modelling (User Modeling, User Profiling)
- The process of creating and maintaining a digital representation of a user's characteristics, preferences, needs, and behaviours to personalise their interaction with a system. In accessibility contex…
- User Participation (User Involvement, Participatory Research, Co-production)
- The active involvement of end users in the design, development, and evaluation of products, services, or systems that affect them. In accessibility contexts, user participation means including people …
- User Preference Profile (Customization Profile, Personalization Profile)
- A stored set of user preferences and settings that can be automatically applied to new content, reducing the need for repeated manual customization. In video accessibility for ADHD, user preference pr…