Glossary
Searchable terminology from accessibility, web standards, and related fields.
41 results found in Research Concepts.
- ABA Reversal Method (ABA Design, Reversal Design)
- The ABA reversal method is a single-subject experimental design in which one participant is observed across three phases: a baseline (A), an intervention (B), and a return to baseline (A). By comparin…
- ABC Model (Antecedent-Behavior-Consequence, ABC Analysis, ABC Framework)
- A behavioural-science framework, rooted in B. F. Skinner's operant conditioning, that analyses any observed behaviour as a three-part sequence: Antecedent (the situation, trigger, or context immediate…
- Abandonment of Assistive Technology (Assistive Technology Abandonment, AT Abandonment, Assistive Technology Discontinuance)
- Abandonment of assistive technology is the well-documented phenomenon in which a substantial proportion of assistive devices acquired by disabled users — commonly reported in the literature at roughly…
- Active Perception (Active Sensing, Sensorimotor Exploration)
- A view of perception in which the perceiver is not a passive receiver of stimuli but an active agent who moves, orients, and manipulates the environment to gather the sensory information needed for a …
- Ambiguous Loss
- Ambiguous loss, a concept articulated by Pauline Boss, is 'a situation of unclear loss that remains unverified and thus without resolution'. Boss distinguishes two types: physical loss where someone i…
- Ask-Point (Help Request Point)
- Ask-point is a term introduced in disability-and-HCI research to name a discrete moment in daily life at which a person with a disability must request help from a caregiver, family member, or other pe…
- Bricolage
- Bricolage is the practice of creating something from whatever materials happen to be at hand — duct tape, pool noodles, velcro strips, PVC pipes, household fabric scraps, bent sponges — rather than pu…
- COM-B Model (COM-B, Capability Opportunity Motivation Behaviour Model)
- A behaviour-change framework proposed by Michie, van Stralen, and West (2011) that identifies three necessary conditions for behaviour to occur: Capability (physical and psychological ability, includi…
- Continuing Bonds
- Continuing bonds is a theory of grief, developed by Klass, Silverman and Nickman in the 1990s, which holds that healthy mourning often involves maintaining an ongoing relationship with a deceased or a…
- Emotional Mediation Hypothesis
- A theoretical account, originating in work by Palmer and colleagues, that explains cross-modal associations between sensory attributes (such as colors and musical timbres) as being mediated by shared …
- Error Profile (Accessibility Error Profile, Violation Profile)
- An error profile is a structured summary of the accessibility issues detected on a page, typically represented as a numeric vector with one component per checkpoint or rule — counts of violations, bin…
- Fragile Learning Continuity
- A framework proposed by Bhuiyan et al. (2026) to describe how accessibility in low-resource Deaf education depends not on any single feature — visibility, sign clarity, vocabulary, or connectivity — b…
- Gaze Reinstatement (Gaze Reinstatement Effect, Looking-at-Nothing Paradigm)
- Gaze reinstatement is the cognitive phenomenon in which a person mentally recalling or imagining a previously seen scene reproduces, on a blank or unrelated surface, eye movement patterns similar to t…
- Ground Truth (Gold standard, Reference labels)
- In machine learning, the labels treated as authoritative when training or evaluating a model - typically produced by human annotators or expert consensus and assumed to represent the 'correct' answer.…
- Guiard's Theory of Asymmetric Bimanual Action (Guiard kinematic chain model, Asymmetric bimanual action model)
- Yves Guiard's 1987 model describing how the two hands typically take complementary, asymmetric roles in everyday manual tasks. The non-dominant hand sets a coarse spatial frame of reference that the d…
- Guided Participation
- Guided participation is a concept from Barbara Rogoff's developmental psychology describing how children learn through engaged collaboration with more experienced partners in everyday shared activitie…
- Hermeneutical Injustice
- Hermeneutical injustice, a concept developed by philosopher Miranda Fricker, is a form of epistemic injustice in which a person's experience is unintelligible to themselves or others because the colle…
- Information Perceptualization (Perceptualization)
- Information perceptualization is the mapping of abstract data or information onto perceptual properties across multiple sensory modalities — vision, hearing, touch, and occasionally taste or smell — i…
- Information Rate (Throughput, Bandwidth)
- The amount of information successfully communicated per unit of time through a communication channel or interface, measured in bits per second. In HCI and assistive technology evaluation, information …
- Information Theory (Shannon Theory, Mathematical Theory of Communication)
- A mathematical framework developed by Claude Shannon in 1948 for quantifying the transmission, processing, and storage of information. Central concepts include entropy (the measure of uncertainty or u…