Glossary

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WEIRD(also: Western, Educated, Industrialized, Rich, and Democratic)

An acronym standing for Western, Educated, Industrialized, Rich, and Democratic — used to describe the demographic and cultural profile of populations that dominate research samples in psychology, HCI, and accessibility studies. The term highlights a significant bias: most…

WEIRD Bias(also: WEIRD Problem)

The overrepresentation of Western, Educated, Industrialized, Rich, and Democratic (WEIRD) populations in research, including HCI and accessibility studies. WEIRD bias means that findings, design guidelines, and technology solutions are predominantly shaped by and for a narrow…

WHODAS 2.0(also: WHODAS, WHO Disability Assessment Schedule, World Health Organization Disability Assessment Schedule 2.0)

WHODAS 2.0 is the World Health Organization Disability Assessment Schedule, version 2.0, a standardized instrument that measures health and disability across six life domains: cognition, mobility, self-care, getting along with others, life activities, and participation in…

Web Interaction Environment(also: WIE)

A modelling concept defined as a particular audience group's set of intrinsic characteristics upon which tailored evaluation procedures can be applied to a website. Introduced by Lopes and Carrico (2008), WIEs organize user characteristics across four domains: Users (abilities,…

Web Mining(also: Web Data Mining, Web Content Mining)

The application of data mining techniques to extract and discover useful information from web data, including web content, structure, and usage patterns. In accessibility evaluation, web mining can be used to analyse source code and DOM structures at scale to identify…

Wilcoxon Signed-Rank Test(also: Wilcoxon Test)

The Wilcoxon signed-rank test is a non-parametric alternative to the paired t-test, used to compare two related samples when the data are ordinal or not normally distributed. It ranks the absolute differences between paired observations and tests whether the sum of positive and…

Within-Subject Design(also: Within-Subjects Design, Repeated Measures Design)

An experimental research design where each participant is exposed to all conditions being compared, rather than assigning different participants to different conditions. In accessibility user studies, within-subject designs are common because they require fewer participants — an…

Within-Subjects Design(also: Repeated Measures Design, Crossover Design)

A research methodology in which the same participants are exposed to all conditions or treatments being compared, with each participant serving as their own control. In accessibility research, within-subjects designs are valuable for comparing assistive technologies or interface…

Within-Subjects Study(also: Within-subject study, Repeated-measures design)

An experimental design in which every participant experiences every condition being compared, so each person acts as their own control. Within-subjects studies increase statistical power with smaller samples and remove between-person variance, but must counterbalance order (e.g.…

Wizard of Oz(also: WOz, Wizard of Oz Study, Wizard of Oz Method)

A research and prototyping technique in which a human operator (the "wizard") secretly performs functions that participants believe are being handled by the system. This allows researchers to study user reactions to capabilities that have not yet been fully implemented. In…

Wizard of Oz(also: WoZ, Wizard of Oz Testing, Wizard of Oz Prototyping)

A research and design method in which a human operator (the "wizard") secretly controls or simulates system responses that participants believe are automated. In accessibility research, Wizard of Oz studies allow researchers to test interaction concepts for assistive…

Wizard of Oz Study(also: WOZ Study, Wizard of Oz Method)

A research method in which participants interact with what they believe is an automated system, but which is actually operated in whole or in part by a human "wizard" hidden from view. The method is used to evaluate the usability and desirability of interfaces that do not yet…

Wizard-of-Oz(also: WOZ, Wizard of Oz Method, WOZ Study)

A research methodology where participants interact with what they believe is an autonomous system, but a human "wizard" is secretly operating it behind the scenes. Named after the 1939 film, this technique is commonly used in accessibility and HCI research to test interface…

Wizard-of-Oz Prototype(also: WOz Prototype, WOz Method, Wizard of Oz Study)

A research and design method where a human operator secretly simulates the behaviour of an interactive system that has not yet been built, allowing participants to experience and evaluate the concept as if the technology were fully functional. Widely used in accessibility and…

Wizard-of-Oz Study(also: WoZ Study, Wizard of Oz Protocol)

A research method in which participants interact with a system they believe is autonomous, but which is actually being partially or fully operated by a human researcher (the "wizard") behind the scenes. In accessibility research, Wizard-of-Oz studies are used to test the…

Wizard-of-Oz Study(also: Wizard of Oz, WoZ Study, Wizard-of-Oz Method)

A Wizard-of-Oz study is a research method in human-computer interaction where participants interact with a system they believe is autonomous, but which is actually being partially or fully operated by a human researcher (the "wizard") behind the scenes. This technique is…

Wizard-of-Oz study(also: WoZ study, Wizard of Oz method)

A research methodology in which participants interact with a system they believe is automated, but which is actually operated partially or fully by a hidden human operator (the "wizard"). This approach allows researchers to evaluate user experience, interface design, and…

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