Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Participant pool bias(also: Sampling bias, Recruitment bias)
- Systematic distortion in research findings caused by the demographic characteristics and backgrounds of study participants, rather than by the technology or intervention being evaluated. In accessibility research, participant pool bias is especially consequential because…
- Participatory Evaluation(also: PE)
- A research approach in which the people affected by a program, technology, or intervention are actively involved in evaluating it, rather than being passive subjects of assessment. In accessibility research, participatory evaluation means disabled people help define evaluation…
- Perturbation testing(also: Counterfactual testing, Template-based testing)
- A bias evaluation methodology for NLP models that systematically substitutes identity-related terms (e.g., disability phrases) in otherwise identical sentences to measure whether the model produces different predictions based on the identity mention alone. By holding all other…
- Psychometric validation(also: Psychometric evaluation, Instrument validation)
- The process of establishing that a measurement instrument (such as a questionnaire or scale) possesses adequate reliability (consistency of measurement), criterion validity (correlation with established measures), and construct validity (measuring the intended theoretical…
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