Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Implicit Interaction(also: Implicit Input, Implicit Human-Computer Interaction)
- Implicit interaction refers to user input that the system infers from natural behaviors not explicitly performed for the purpose of issuing commands, such as gaze, gait, posture, physiological signals, or ambient context. It contrasts with explicit interaction, where users…
- In-Situ Deployment(also: In-Situ Study, Field Deployment Study)
- A research methodology in which a functional prototype or product is installed on participants' own devices and used in their everyday environment over days, weeks, or months, rather than in a controlled laboratory session. In-situ deployments are especially valuable for…
- Information Foraging Theory(also: IFT)
- A theory proposed by Pirolli and Card describing how people seek information by adaptively optimising for maximum information gain with minimum effort, analogous to animal foraging. Key constructs include information scent (cues signalling potential usefulness), information…
- Infrastructural Inversion
- A methodological move, articulated by Geoffrey Bowker and Susan Leigh Star, that foregrounds the usually invisible infrastructure underpinning everyday action — categories, standards, procedures, silent stabilising work — treating it as the primary object of analysis rather than…
- Infrastructuring
- A theoretical lens from HCI, CSCW, and participatory design (developed from the work of Susan Leigh Star, Karen Ruhleder, Volkmar Pipek, and Volker Wulf) that treats infrastructure not as a finished artifact but as an ongoing, situated accomplishment. Infrastructuring highlights…
- Interaction Analysis
- A qualitative research method for studying knowledge and action in interaction with people, objects, and environments — typically through close observation of video or screen recordings, annotating visible affect, body language, utterances, and moment-by-moment behavior.…
- Interactional Synchrony
- The coordinated, often unconscious alignment of conversational partners' body postures, gestures, gaze, vocal rhythm, and facial expressions during social interaction. Research in social psychology and affective neuroscience has linked interactional synchrony to rapport,…
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