Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Magnitude Estimation(also: Psychophysical Scaling, Stevens Method)
- A psychophysics research method where participants assign numerical values to stimuli based on their perceived intensity or magnitude. In accessibility research, magnitude estimation is used to determine how users naturally interpret sensory mappings—for example, what…
- Means-End Chain(also: MEC, Means-End Theory)
- A theoretical framework and analytical output from Laddering research that maps how product attributes lead to functional and psychosocial consequences, which in turn connect to personal values. A chain might show: "Nature scenery (attribute) → Feeling of calm (functional…
- Model Human Processor(also: MHP, Human Processor Model)
- A cognitive architecture developed by Card, Moran, and Newell (1983) that models human information processing as three interconnected subsystems: perceptual, cognitive, and motor processors, each with characteristic cycle times. The perceptual processor (~100ms) handles sensory…
- Modified Borg Scale(also: Borg CR10 Scale, MBS, Borg Scale)
- A self-report rating scale used to measure the perceived intensity of physical sensations such as breathlessness, exertion, or pain, ranging from 0 (nothing at all) to 10 (maximal). Originally developed by Gunnar Borg in 1982, the Modified Borg Scale is widely used in pulmonary…
- Montreal Cognitive Assessment(also: MoCA)
- A widely used cognitive screening tool designed to detect mild cognitive impairment (MCI). The MoCA assesses multiple cognitive domains including short-term memory, visuospatial abilities, executive function, attention, language, and orientation. Scores range from 0-30, with 26…
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