Glossary

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Electropalatography(also: EPG, Dynamic Palatography, Palatography)

A technique for recording tongue-palate contact during speech using an artificial palate fitted with electrodes. When the tongue touches the palate, it completes a low-amperage electrical circuit that is detected and displayed visually in real time. In accessibility and deaf…

Electrotactile(also: Electrotactile Stimulation, Electrical Tactile Stimulation)

A form of tactile feedback that applies controlled electrical current to stimulate touch nerve endings in the skin, creating sensations of pressure, tingling, or texture. Electrotactile displays can achieve higher spatial resolution than vibrotactile systems because electrodes…

Electrotactile Feedback(also: Electrotactile, Electrical Tactile Stimulation)

A form of haptic feedback that uses controlled electrical current applied directly to the skin or through a thin insulating layer to generate tactile sensations. Unlike vibrotactile feedback (which uses mechanical vibration) or pressure feedback (which uses physical force),…

Element Detection(also: UI Element Detection, Widget Detection, Object Detection)

The task of automatically identifying the locations and types of user interface components (such as buttons, text fields, images, and checkboxes) from a screenshot using computer vision models. Element detection is important for accessibility because it can identify interactive…

ElevenLabs

A commercial AI voice platform that generates realistic synthetic speech and voice clones from text. ElevenLabs is used in accessibility contexts for producing narrated video voiceovers, audiobook-style readings, and personalized text-to-speech voices, and it has been adopted in…

Elicitation Study(also: Gesture Elicitation Study)

An elicitation study is a user research method in which participants are shown the effect of an action (called a referent) and asked to propose the input or gesture (called a sign) that should cause it. This approach generates user-defined interaction techniques rather than…

Eligibility Theatre

A term coined by Curtis et al. (2026) to describe the performance of visible, narrowly-framed disability that claimants are forced to stage in order to satisfy bureaucratic and algorithmic expectations of welfare and benefits systems. Applicants with invisible or communication…

Emacspeak(also: The Emacspeak Audio Desktop)

A free, open-source speech output system built on top of the Emacs text editor that provides complete auditory access to a computing environment for blind and visually impaired users. Created by T. V. Raman in 1994 and still actively maintained, Emacspeak pioneered the concept…

Email Anxiety(also: Inbox Anxiety)

Intense anxiety, dread, or avoidance behavior around checking, opening, and responding to emails, commonly experienced by people with ADHD. Email anxiety can involve physical symptoms like racing heart and nausea, fear of receiving negative feedback or reminders of missed…

Emancipatory Research(also: Emancipatory Disability Research)

A research paradigm that positions people with disabilities not merely as research subjects but as active agents who lead and control research about their own lives and experiences. Emerging from the disability rights movement and the social model of disability, emancipatory…

Embedded Description(also: Inline Description, Integrated Description)

A technique for making presentation content accessible where the speaker verbally describes relevant visual information on slides — including text, images, graphics, and other visual aids — as part of their narration during the presentation itself. Unlike audio descriptions…

Embedded System(also: Embedded Device, Embedded Computer)

A specialised computer system designed to perform a dedicated function within a larger device, typically operating with real-time constraints and limited resources. Unlike general-purpose computers, embedded systems are built into the products they control. In assistive…

Embodied Agent(also: Embodied Conversational Agent, Embodied AI)

An interactive system that is represented in physical or graphical form with a body, face, or avatar, allowing it to communicate with users through multiple modalities such as speech, gesture, gaze, and expression. Embodiment matters in accessibility contexts because physically…

Embodied Cognition(also: Embodiment)

A theory in cognitive science proposing that the mind is not an isolated entity but is deeply integrated with the body's sensorimotor systems. In other words, how we think, perceive, and make decisions is shaped by our physical bodies and their interactions with the environment.…

Embodied Communication(also: Embodied Interaction)

Communication that involves the whole body as a resource for meaning-making, including gestures, posture, facial expressions, gaze, touch, and physical movement through space. Embodied communication recognizes that meaning is not solely transmitted through words but is…

Embodied Conversational Agent(also: ECA, Virtual Agent, Animated Agent)

A computer-generated animated character designed to interact with human users using multiple simultaneous communication channels — typically speech, eye gaze, facial expression, head and body posture, and hand gestures. ECAs are used in tutoring systems, customer-service agents,…

Embodied Critique(also: Embodied Feedback, Body-Based Critique)

A method of expressing critical feedback through physical bodies and bodily actions rather than relying solely on spoken or written language. Embodied critique draws on disability cultures where communication frequently extends beyond verbal or textual modes, recognizing that…

Embodied Experience(also: Embodied Interaction, Embodiment (UX))

The dimension of user experience that arises from the body's sensory and kinaesthetic encounter with a system or environment — motion, vibration, balance, proprioception, ambient sound, and felt pace — rather than from explicit information channels. In autonomous transport,…

Embodied Expertise(also: Embodied Knowledge, Tactile Expertise)

Skilled knowledge that resides in the body through practiced physical routines, muscle memory, and sensory awareness rather than in explicit cognitive rules or visual information. In accessibility research, embodied expertise describes the sophisticated tactile and kinesthetic…

Embodied Exploration

An approach to virtual environment interaction in which the user builds understanding of a space by physically walking, turning, reaching, and sweeping rather than by teleporting or using controller-based locomotion. Embodied exploration is particularly important for blind and…

Embodied Harassment

Harassment in virtual reality environments that targets a user's avatar body or physical representation, such as invading personal space, mimicking movements, or physically interacting with avatar features without consent. In the context of disability, embodied harassment…

Embodied Ideation(also: Embodied Design Ideation)

A design method that engages participants in generating ideas through physical movement, bodily interaction, and hands-on exploration rather than purely verbal or written communication. In accessibility contexts, embodied ideation is particularly valuable for including…

Embodied Interaction(also: Embodied Cognition in HCI)

An approach to human-computer interaction that emphasizes the role of the physical body in how people engage with and understand technology. Embodied interaction recognizes that cognition is not purely mental but shaped by physical experience, movement, and sensory engagement.…

Embodied Knowledge(also: Embodied expertise, Lived knowledge)

Knowledge that is grounded in bodily experience rather than externally observable behaviour or abstract rule - the kind of knowing a person who stutters has about the tension before a block, a blind person has about which photo crops preserve meaning, or a Deaf signer has about…

Embodied Learning(also: Embodied Cognition, Kinesthetic Learning)

A learning approach that engages the whole body in the process of understanding, not just the mind. Embodied learning recognizes that physical movement, touch, spatial navigation, and bodily interaction with environments contribute fundamentally to how people construct…

Embodied Sketching

Embodied sketching is a participatory design method in which participants and designers physically act out interaction ideas with their bodies, props, and the surrounding space rather than only sketching them on paper or screen. It surfaces movement, social, and sensory…

Embodied Skill Learning(also: Motor Skill Learning)

A view of learning in which acquiring a skill - such as a sign language gesture, a musical performance, a sport movement, or a rehabilitation exercise - depends on coordinated bodily action rather than on memorising symbolic information. Embodied skill learning emphasises…

Embodied cognition(also: Embodied learning, Enactive cognition)

A theoretical framework proposing that cognitive processes are deeply shaped by the body's interactions with its physical environment — that thinking is not purely abstract but is grounded in sensory experience, motor action, and bodily engagement with materials. In…

Embodied participation(also: Embodied presence)

The experience of being physically present and actively engaged in a shared space through one's body or a technological proxy for it. In accessibility contexts, embodied participation refers to how technologies like telepresence robots can provide remote users with a physical…

Embodiment(also: Virtual Embodiment)

The sense of inhabiting and controlling a virtual body in VR, feeling that the avatar is an extension of oneself rather than a separate entity. Embodiment is fostered through synchronized tracking of physical movements to avatar movements, visual congruence between the user's…

Embossed Braille(also: Hard Copy Braille, Paper Braille)

Braille text produced by physically raising dots on paper or other materials, creating a tactile surface that can be read by touch. Embossed Braille is produced using Braille embossers (printers), slates and styluses, or Braille typewriters such as the Perkins Brailler. It…

Embossed Graphics(also: Embossed Tactile Graphics, Raised Graphics)

Tactile graphics produced by a braille embosser or similar device that creates raised dots and lines on heavy paper or card stock. Embossed graphics are one of the most common methods for producing tactile representations of visual information for blind and visually impaired…

Embossed Paper(also: Raised Paper, Tactile Paper)

Paper that has been processed to create raised textures, shapes, or text that can be perceived through touch. In accessibility contexts, embossed paper is used to represent visual information non-visually, including diagrams, user interface layouts, maps, and graphical elements.…

Embosser(also: Braille Embosser, Tactile Graphics Embosser)

A device that creates raised (embossed) output on paper or other materials, used to produce braille text and tactile graphics for people who are blind or have low vision. Braille embossers function similarly to printers but press dots upward into heavy paper to create tactile…

Embossing(also: Braille Embossing, Tactile Embossing)

The process of creating raised patterns on paper or other materials by pressing from behind, producing content that can be read by touch. In accessibility, embossing is the primary method for producing Braille text and tactile graphics. Braille embossers are specialized printers…

Embroidered Braille

Braille text produced using machine embroidery rather than traditional embossing methods. Embroidered braille uses raised stitch patterns (typically candlewick knots) to create the dots of braille cells on fabric. While embroidered braille offers the advantage of integration…

Emergency Evacuation Accessibility(also: Accessible Emergency Egress, Inclusive Emergency Evacuation)

The design of emergency evacuation procedures, systems, and infrastructure that enable people with disabilities to independently and safely exit buildings during emergencies. Traditional evacuation systems rely on visual and auditory alarms, posted signage, and physical routes…

Emergency Preparedness(also: Disaster Preparedness, Crisis Preparedness)

The planning, policies, and infrastructure put in place to ensure that communities can respond effectively to emergencies such as natural disasters, pandemics, and other crises. In accessibility contexts, emergency preparedness has a poor track record of including people with…

Emergent Communicator(also: Beginning Communicator, Pre-Symbolic Communicator)

A person who is in the early stages of learning to use symbolic communication — understanding that symbols, words, pictures, or signs can represent objects, actions, and concepts. Emergent communicators may use a combination of gestures, vocalizations, facial expressions, and…

Emergent Literacy(also: Early Literacy, Pre-literacy)

The developmental process through which young children (typically birth through age 5) acquire foundational skills and concepts about reading and writing before formal instruction begins. For sighted children, picture books and illustrations play a crucial role by providing…

Emoji(also: Emojis)

Small pictographic characters — faces, gestures, objects, symbols — encoded as Unicode code points and rendered by platform-specific font sets, used to convey affect, tone, and non-verbal nuance in otherwise text-based or visually-limited communication. For accessibility, emoji…

EmojiGrid(also: Emoji Grid, EmojiGrid Scale)

A two-dimensional self-report tool, developed by Toet et al. (2018), in which participants rate the emotional content of a stimulus by clicking on a point in a grid whose axes are valence (horizontal) and arousal (vertical). Rows and columns of emoji faces are arranged around…

Emotion Recognition(also: Facial Emotion Recognition, FER, Affect Recognition)

AI technology that attempts to identify human emotional states from facial expressions, voice patterns, body language, or physiological signals. Emotion recognition systems have been widely criticized for poor accuracy, cultural bias, and particular harm to people with…

Emotion Regulation(also: Affect Regulation, Self-Regulation of Emotion)

The processes by which a person monitors, evaluates, and modifies emotional reactions to achieve goals or meet situational demands — including selecting or changing situations, directing attention, reframing meaning (cognitive reappraisal), and adjusting outward expression.…

Emotional Accessibility(also: Psychological Accessibility)

The consideration of emotional and psychological impacts in accessibility design, recognizing that inaccessible technology affects not only task completion but also users' confidence, autonomy, stress levels, and overall well-being. Emotional accessibility extends traditional…

Emotional Agency

The ability of an individual to independently manage their emotional responses and experiences, particularly when encountering sensitive or personal information. In the context of accessibility and generative AI, emotional agency refers to the capacity of blind and low vision…

Emotional Design

A framework developed by Don Norman describing how people evaluate and form attachments to products through three cognitive levels: visceral (immediate sensory and aesthetic responses), behavioral (functional performance and usability), and reflective (personal meaning,…

Emotional Dysregulation(also: Emotion Dysregulation, Emotional Impulsivity, Affective Dysregulation)

Difficulty managing emotional responses, characterized by rapid, intense, and often disproportionate reactions to stimuli with limited reflection or regulation. Emotional dysregulation is a core yet frequently overlooked feature of adult ADHD, not included in DSM-5 diagnostic…

Emotional Engagement(also: Affective Engagement)

The degree to which a user connects emotionally with content, characters, and narrative, experiencing feelings such as excitement, tension, empathy, humor, or sadness in response to the media. In accessibility research on audio-described webtoons, emotional engagement is a…

Emotional Intelligence Test(also: EI Test, I-EQ Test, Emotional Intelligence Assessment)

A hiring assessment that asks candidates to identify emotions in photographs of faces or to judge appropriate emotional responses in social scenarios. Emotional-intelligence tests are particularly inaccessible to blind and low-vision candidates, who may be unable to interpret…