Glossary

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Perceptual Integration(also: Perceptual Binding)

The process by which the brain combines information arriving through different sensory channels — vision, hearing, touch, proprioception — into a single coherent percept of an object or event. Perceptual integration depends on temporal synchrony (cues arriving within roughly 100…

Personal Space(also: Interpersonal Distance, Personal Distance Zone)

The invisible boundary surrounding a person that they consider their own territory, the violation of which can cause discomfort or stress. Research by Edward T. Hall defined four distance zones: intimate (0-18 inches), personal (18 inches to 4 feet), social (4-12 feet), and…

Physical Agency(also: Bodily Agency, Sense of Agency)

The feeling of control and ownership over physical actions and their effects in the world. In assistive technology contexts, physical agency refers to a users sense of directly controlling objects and receiving sensory confirmation of their actions. Traditional AT designs often…

Place Attachment(also: Sense of Place)

Place attachment is the emotional and cognitive bond a person forms with a particular location — a home, neighbourhood, city, or landscape — built up through memory, repeated experience, social ties, and meaning-making. It is studied in environmental psychology, urban planning,…

Planning Fallacy

A well-documented cognitive bias, identified by Kahneman and Tversky and elaborated by Buehler and colleagues, in which people systematically underestimate how long their own tasks will take and overestimate how much they can finish, even when they have direct evidence that…

Proteus Effect

The Proteus Effect is a phenomenon, first described by Yee and Bailenson (2007), in which the appearance of a person's avatar influences how they think, behave and interact in virtual or augmented environments. For example, users assigned taller or more attractive avatars tend…

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