Glossary
Searchable terminology from accessibility, web standards, and related fields.
13 results found in Usability Testing.
- Acquiescence Bias (Agreement Bias, Yea-Saying)
- A type of response bias where survey respondents tend to agree with statements regardless of their actual content. This "yea-saying" tendency can skew research results, particularly in accessibility s…
- Between-Subjects Design (Between-Groups Design, Independent-Groups Design)
- A between-subjects design is an experimental research design in which each participant is assigned to only one condition, and the conditions are compared across different groups of people. It contrast…
- Cooperative Evaluation (Cooperative Usability Evaluation, Modified Think-Aloud)
- A usability evaluation method in which the researcher and participant work together as collaborators rather than following a strict observer-subject protocol. Unlike standard controlled experiments, c…
- Hierarchical Task Analysis (HTA)
- A structured method for describing and analyzing tasks by breaking them down into goals, sub-goals, and operations in a hierarchical tree structure. Originally developed for industrial and safety-crit…
- Likert Scale (Likert-type Scale, Rating Scale)
- A psychometric scale commonly used in surveys and questionnaires where respondents indicate their level of agreement with a statement, typically using options ranging from "strongly disagree" to "stro…
- Peak Velocity
- The maximum speed reached by a cursor or limb during a directed movement toward a target. In human-computer interaction research, peak velocity is a key metric for understanding pointing performance, …
- Playtesting (Play testing)
- A user-research method in game and interactive-system design in which representative users play an in-development game while researchers observe, collect think-aloud commentary, and conduct follow-up …
- Pluralistic Walkthrough (Pluralistic Usability Walkthrough)
- A group usability inspection method, introduced by Randolph Bias in 1994, in which users, developers, and usability specialists step through a task scenario together, each writing down the actions the…
- Response Bias (Survey Bias, Respondent Bias)
- A systematic tendency for survey respondents to answer questions in a way that does not accurately reflect their true opinions or experiences. In accessibility research, response bias is particularly …
- Semi-Automatic Wizard-of-Oz (Semi-Automatic WoZ)
- A hybrid Wizard-of-Oz study methodology in which part of a prototype system is implemented with real automation while a human researcher (the 'wizard') intervenes only for components that are not yet …
- Social Desirability Bias (Impression Management)
- A type of response bias where participants answer questions in a manner they believe will be viewed favorably by others rather than responding truthfully. In accessibility research contexts, this can …
- System Usability Scale (SUS)
- A widely used, standardized questionnaire consisting of 10 items that measures perceived usability of a system. Developed by John Brooke in 1986, SUS provides a "quick and dirty" reliable measure of u…
- UEQ-S (User Experience Questionnaire - Short, Short UEQ)
- UEQ-S is an eight-item short version of the User Experience Questionnaire, a standardised survey instrument that measures subjective user experience on a 7-point semantic-differential scale. It captur…