Glossary

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Fall Prevention(also: Fall Risk Reduction, Falls Prevention)

Strategies, interventions, and technologies designed to reduce the risk of falls, particularly among older adults and people with mobility or balance impairments. Falls are a leading cause of injury, hospitalization, and loss of independence in aging populations. Fall prevention…

Fluid intelligence(also: Fluid reasoning, Gf)

The cognitive ability to reason, solve novel problems, and identify patterns without relying on previously acquired knowledge or skills. Fluid intelligence typically declines with age and is commonly measured through tasks involving pattern recognition, inductive reasoning, and…

Gerontechnology(also: Gerontech)

An interdisciplinary field combining gerontology (the study of aging) and technology to design products, services, and environments that support the health, independence, and quality of life of older adults. Gerontechnology addresses the specific needs and abilities of aging…

Grey Digital Divide(also: Gray Digital Divide, Age-Related Digital Divide)

The gap in technology adoption, usage, and digital skills between older adults and younger populations. While older adults may be interested in using technology for communication, health management, and entertainment, they often face barriers including interface complexity,…

Health Data Visualization(also: Health Data Display, Patient Data Visualization)

The presentation of personal health information — such as blood glucose levels, blood pressure readings, activity data, or medication schedules — in visual formats including graphs, charts, trend lines, and indicators designed to help patients understand and manage their health…

Health Literacy(also: Digital Health Literacy, eHealth Literacy)

The degree to which individuals can obtain, process, understand, and act on health information and services needed to make appropriate health decisions. In the digital context, health literacy extends to the ability to seek, find, understand, and appraise health information from…

Homebound(also: Housebound)

A status in which an individual has difficulty leaving their home without assistive devices or help from others, typically due to illness, injury, or environmental factors such as lack of transportation. As defined by the U.S. Centers for Medicare & Medicaid Services, homebound…

Hyper-aged Society(also: Super-aged Society)

A country or region where people aged 65 and over make up more than 21% of the total population. The term distinguishes extreme demographic aging from merely "aging" (7%+) or "aged" (14%+) societies. Japan became the world's first hyper-aged society around 2007 and is widely…

Informal Carer(also: Informal Caregiver, Family Carer, Unpaid Carer)

A person who provides regular care and support to a family member, friend, or neighbour who has a disability, chronic illness, mental health condition, or age-related needs, without being paid as a professional caregiver. Informal carers — most commonly spouses, adult children,…

Information chunking(also: Chunking)

The practice of organizing information into smaller, manageable groups or segments to reduce cognitive load and improve comprehension and retention. Rooted in cognitive psychology research on working memory limitations, chunking is essential for accessible content design —…

Instructional design(also: Learning design)

The systematic process of creating educational or instructional materials and experiences that facilitate effective learning and task completion. In accessibility, instructional design principles ensure that tutorials, product manuals, help documentation, and learning materials…

Intelligent Home System(also: IHS, Smart Home System, Ambient Assisted Living System)

A technology-enhanced living environment that uses sensors, actuators, and computing to monitor conditions and provide automated or voice-activated support for daily activities, particularly for older adults and people with disabilities who wish to live independently.…

Intergenerational Communication(also: Cross-generational Communication)

Communication between people of different generations, particularly between older adults and younger family members or caregivers, which can be complicated by differing expectations, technology literacy levels, and communication styles. In accessibility and aging contexts,…

Late-Life Disability(also: Age-Related Disability, Acquired Age-Related Disability)

Disability that develops gradually as a person ages, including changes in vision, hearing, motor control, and cognition. Unlike disabilities present from birth or acquired through injury, late-life disabilities often develop incrementally, and individuals may not identify as…

Loss Aversion

A cognitive bias in which people experience the pain of losing something more intensely than the pleasure of gaining something of equal value. In the context of technology accessibility and aging, loss aversion significantly influences older adults' adoption of digital tools,…

Maslow's Hierarchy of Needs(also: Maslow's Hierarchy, Hierarchy of Needs)

A motivational theory in psychology proposed by Abraham Maslow that organises human needs into a hierarchical pyramid, from basic physiological needs at the base through safety, social belonging, esteem, and self-actualisation at the top. The theory proposes that lower-level…

Medication Management(also: Medication Adherence, Medication Compliance)

The process of overseeing and managing the medications prescribed to an individual, including remembering to take medications at the correct times, in the correct doses, and tracking what has been taken. Medication management is a significant challenge for older adults and…

Memory Impairment(also: Memory Loss, Memory Deficit)

A reduction in the ability to encode, store, or retrieve information, ranging from mild forgetfulness associated with normal ageing to severe deficits caused by conditions such as dementia or traumatic brain injury. Memory impairment affects digital accessibility in multiple…

Mini-Mental State Examination(also: MMSE, Mini-Mental State Exam, Folstein Test)

A widely used brief screening tool for cognitive impairment, originally developed in 1975. The MMSE assesses orientation, memory, attention, language, and visuospatial skills through a series of questions and tasks, yielding a score out of 30. Scores below 24 typically indicate…

Multi-Layered Interface(also: ML Interface, Layered Interface, Training Wheels Interface)

An interface design approach where novice users start with a reduced-functionality layer containing only basic features, then progress to more complex layers as they become comfortable. This technique reduces cognitive load during initial learning by limiting the number of…

Multimorbidity(also: Multiple Long-term Conditions, Co-occurring Conditions)

Multimorbidity is the presence of two or more chronic health conditions or long-term impairments in a single individual. It is especially prevalent among older adults and is a major factor in the complexity of accessibility needs. Research shows that multimorbidity is the norm…

Multisensory Integration

The neural and perceptual process by which the brain combines information from different sensory modalities — sight, hearing, touch, proprioception — into a unified percept. Integration relies on temporal and spatial binding windows that widen with age: older adults tolerate…

Multisensory Stimulation(also: MSS)

A therapeutic and design approach that intentionally coordinates multiple sensory modalities — visual, auditory, tactile, olfactory, and kinetic — to support affective well-being, cognitive engagement, and behavioral regulation. MSS has a long clinical history in dementia care…

Older Adults(also: Seniors, Elderly, Aging Population)

People typically aged 65 and above who may experience age-related changes in vision, hearing, motor control, and cognition that affect how they interact with technology. Designing for older adults requires attention to larger text sizes, higher contrast, simplified navigation,…

Perceptual speed(also: Processing speed, Cognitive processing speed)

The speed at which an individual can accurately perceive, compare, and respond to visual or auditory stimuli, typically measured through timed tasks requiring rapid symbol comparison or pattern matching. Perceptual speed declines with age and is a significant predictor of…

Person-Centred Care(also: Person-Centered Care, Person-Centred Approach)

An approach to care and support that places the individual — their preferences, needs, values, history, and identity — at the centre of all decisions and interactions, rather than focusing primarily on their diagnosis or deficits. Originated in dementia care through the work of…

Personal emergency response system(also: PERS, PER system, Medical alert system)

A device, typically a wearable pendant or wristband with a button, that allows a person to summon help in an emergency. Despite being the mainstream solution for older adults living alone, PERS devices suffer from poor adoption: users forget to wear them, find them stigmatizing,…

Persuasive Technology(also: Behaviour Change Technology, Behavior Change Technology)

Technology designed to change users' attitudes or behaviours through persuasion and social influence rather than coercion. In health and wellness contexts, persuasive technologies use strategies such as goal-setting, self-monitoring, reminders, social comparison, and rewards to…

Pet Robot(also: Robotic Pet, Zoomorphic Robot, Companion Pet Robot)

A socially interactive robot designed to resemble and behave like an animal companion — most famously PARO (a baby harp seal) and AIBO (a robotic dog) — used to provide emotional comfort, reduce loneliness, stimulate engagement, and support therapy for older adults, particularly…

Presbycusis(also: Age-Related Hearing Loss, Presbyacusis)

A gradual, progressive loss of hearing in both ears that occurs as a natural part of aging, primarily affecting the ability to perceive higher-frequency sounds. Presbycusis is the most common cause of hearing loss in older adults and has significant implications for the design…

Presbyopia(also: Age-Related Farsightedness, Loss of Accommodation)

An age-related vision condition in which the eye gradually loses the ability to focus on nearby objects, typically becoming noticeable after age 40. Presbyopia affects the vast majority of older adults and is caused by the hardening of the eye's lens, reducing its flexibility.…

Presbyopia(also: Age-Related Farsightedness)

An age-related vision condition where the eye gradually loses its ability to focus on nearby objects, typically becoming noticeable in the early to mid-40s. Presbyopia affects virtually everyone as they age and significantly impacts web accessibility, making small text difficult…

Processing Speed(also: Information Processing Speed, Cognitive Processing Speed)

A cognitive ability referring to how quickly a person can perceive, process, and respond to information. Processing speed affects how rapidly someone can read, understand instructions, react to stimuli, and complete timed tasks. It naturally declines with age, beginning in…

Quality of Life Technology(also: QoLT, QoL Technology)

An umbrella term encompassing technologies designed to maintain or enhance the health, functioning, and independence of older adults and people with disabilities. Quality of life technology includes assistive technology, smart home systems, telemedicine, health monitoring…

Reminiscence(also: Reminiscence Therapy)

The process of recalling and reflecting on past personal experiences, often used therapeutically to promote mental well-being in older adults. Reminiscence therapy involves structured activities that trigger memories through sensory cues, familiar locations, music, or…

Residential Care(also: Care Home, Nursing Home, Long-Term Care Facility)

A facility that provides housing, personal care, and support services for individuals who cannot live independently due to age, disability, or health conditions. Residential care settings range from assisted living facilities offering minimal support to skilled nursing…

Respite Care(also: Respite, Carer Relief)

Temporary care provided to a person with a disability or chronic condition to give their primary caregiver a break from their caregiving responsibilities. Respite care can take many forms, including in-home care, day programs, overnight stays in care facilities, or social…

Routinisation(also: Routinization, Age-Related Routinisation)

The tendency of older adults to increasingly organise their daily activities into fixed, predictable routines as they age. As cognitive resources decline, older adults optimise their remaining capacity by performing activities in the same order, at the same times, and in the…

Sedentary Behaviour(also: Sedentary Lifestyle, Physical Inactivity)

Any waking behaviour characterised by low energy expenditure while in a sitting, reclining, or lying posture, such as prolonged sitting at a desk, watching television, or using a computer. Sedentary behaviour is a leading risk factor for preventable chronic diseases including…

Self-tracking(also: Quantified Self, Self-monitoring, Personal Informatics)

The practice of using technology — typically wearable devices like smartwatches and fitness trackers — to systematically record and monitor personal data about one's own behaviour, health, or activities. Self-tracking can help individuals, including older adults and people with…

Social Isolation(also: Social Disconnection)

The objective lack of social contact and relationships, distinct from loneliness (the subjective feeling of being alone). Social isolation is a significant accessibility concern because it can both result from and contribute to barriers in technology use—isolated individuals may…

Social Isolation

A state of limited or absent social contact and interaction with others, which can result from physical, environmental, or psychological barriers. For people with disabilities and older adults, social isolation often stems from mobility limitations, communication difficulties,…

Social isolation(also: Loneliness, Social exclusion)

A state of limited or absent social contact and meaningful relationships, recognized as a significant risk factor for poor physical and mental health outcomes, particularly among older adults and people with disabilities. Social isolation can result from physical barriers…

Socio-Gerontechnology

A theoretical framework, developed by Alexander Peine and Louis Neven, that analyses aging and technology as mutually constitutive: technologies do not simply serve pre-existing aging needs, and aging is not a pre-given biological fact — the two co-produce each other through…

Stress Process Model(also: Pearlin Stress Process Model)

A theoretical framework developed by Leonard Pearlin and colleagues (1981) that describes how stressors, mediators, and outcomes interact dynamically over time to shape psychological wellbeing. In caregiving research, the model is widely used to understand how primary stressors…

Subjective cognitive decline(also: SCD, Subjective memory complaint, SMC)

A self-perceived decline in cognitive abilities, particularly memory, that is not detectable on standard cognitive tests. Individuals with subjective cognitive decline notice changes in their thinking abilities but perform normally on clinical assessments. Research suggests SCD…

Technophobia(also: Technology Anxiety, Computer Anxiety)

An irrational fear or anxiety about using technology, often manifesting as avoidance of computers, smartphones, or websites. Technophobia can stem from negative past experiences, fear of making mistakes, concerns about privacy and security, or feeling overwhelmed by rapidly…

Useful Field of View(also: UFOV, Functional Visual Field)

The useful field of view (UFOV) is the area of the visual field from which a person can extract information in a single glance without moving their eyes or head. Unlike the anatomical visual field, the UFOV is a measure of functional vision that depends on cognitive processing…

User Sensitive Inclusive Design(also: USID)

A design methodology proposed as an alternative to User Centred Design for populations with highly diverse and dynamically changing needs, particularly older people. User Sensitive Inclusive Design replaces "centred" with "sensitive" to acknowledge that it may be impossible to…

Voice Augmentation(also: Audio Augmentation, Voice-Based Augmentation)

A technique for enhancing user interfaces by adding spoken audio feedback to supplement visual information on screen. Voice augmentation provides contextual support through spoken confirmations of user input, notifications of errors or status changes, suggestions for next…