Glossary

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ICCHP(also: International Conference on Computers Helping People with Special Needs)

A biennial research conference on technology for people with disabilities, held in Europe since 1989. ICCHP provides a peer-reviewed academic venue for accessibility research with a strong European perspective, complementing the ASSETS conference. Topics span assistive…

Implementation Science

The study of methods and strategies that promote the systematic uptake of research findings and evidence-based practices into routine clinical, educational, or service settings. Implementation science addresses the well-documented research-to-practice gap: even rigorously…

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…

IncluSet

A dataset surfacing repository created by researchers at the University of Maryland that catalogs and organizes accessibility datasets — datasets sourced from people with disabilities and older adults. IncluSet was developed to make it easier for AI researchers and practitioners…

Index of Difficulty(also: ID, Fitts ID)

The Index of Difficulty (ID) is the central quantity in Fitts' law that captures how hard a rapid aimed pointing movement is, computed as log₂(A/W + 1) in the Shannon formulation, where A is the amplitude (distance to the target) and W is the target width along the movement…

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…

Infrastructuring for Access

A design approach introduced by Wang and Marie (CHI 2026) that combines HCI's infrastructuring theory with Disability Studies and Repair Studies. Rather than focusing on removing barriers or accommodating individual users, Infrastructuring for Access treats disabled…

Interaction with Disabled Persons Scale(also: IDP Scale, IDP)

A standardized 20-item attitudinal instrument developed by Gething and Wheeler (1992) and later validated by Forlin, Fogarty, and Caroll (1999), designed to measure both desirable and undesirable emotions that people experience when interacting with individuals who have…

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