Glossary
Searchable terminology from accessibility, web standards, and related fields.
55 results found in Evaluation Methods.
- SHAP (SHapley Additive exPlanations)
- A unified framework for feature-importance explanations of machine-learning models, introduced by Lundberg and Lee in 2017, grounded in Shapley values from cooperative game theory. For any model and i…
- Scenario-Based Evaluation (Path-Based Testing, User Journey Testing)
- An accessibility evaluation approach that assesses the complete user experience across a sequence of steps needed to accomplish a task, rather than testing individual pages in isolation. For example, …
- Score Prediction (Predicted grade, Comprehension self-prediction)
- A subjective-response evaluation item in which a research participant, immediately after reading a passage and before learning their actual comprehension-question score, estimates the percentage of qu…
- Self-Assessment Manikin (SAM)
- A nonverbal pictorial instrument developed by Bradley and Lang (1994) for measuring the affective dimensions of valence, arousal, and dominance. Respondents select from a row of stylised manikin figur…
- Semiotic Inspection Method (SIM, MIS)
- An evaluation method from Semiotic Engineering theory that systematically assesses the communicability of an interactive system by examining how well the designer's intended message is conveyed throug…
- Sensitivity (Recall, Thoroughness, Completeness)
- In the context of accessibility evaluation, sensitivity (also called recall or thoroughness) is the proportion of true accessibility problems that are successfully identified and reported by an evalua…
- Single Case Experimental Design (SCED, Single Subject Design, N-of-1 Design)
- A research methodology in which individual participants serve as their own control, with repeated measurements taken during baseline and intervention phases to evaluate the effect of a treatment or in…
- Theory of Change (ToC, Logic Model)
- An explicit articulation of how and why a planned intervention is expected to produce its intended outcomes - typically expressed as a chain linking inputs to activities, outputs, short- and long-term…
- Trust in Automation (Automation trust, TiA)
- A human factors construct describing the extent to which a person believes an automated system — a car, aircraft, medical device, AI assistant, or robot — will perform reliably and behave in their int…
- 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…
- Usability Heuristics (Nielsen's Heuristics, Nielsen Heuristics, 10 Usability Heuristics)
- A set of ten general principles for user interface design developed by Jakob Nielsen (originally with Rolf Molich in 1990, refined in 1994): visibility of system status, match between system and the r…
- 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 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,…
- Wilcoxon Signed-Rank Test (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 dif…
- Wizard-of-Oz Study (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…