Glossary

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Challenge-Point Framework

A motor-learning theory proposed by Guadagnoli and Lee (2004) which holds that learning is optimised when the difficulty of a task is appropriately matched to the learner's current skill level. Tasks that are too easy provide little information to learn from, while tasks that…

Co-Located Collaboration(also: Co-Located Cooperation)

Co-located collaboration is the shared activity of people working or playing together while physically present in the same space, as distinct from remote or distributed collaboration. In HCI and accessibility research, co-located collaboration is studied because it adds embodied…

Co-Pilot Mode(also: Copilot Mode, Xbox Copilot)

Co-Pilot Mode is an accessibility feature, introduced by Microsoft on Xbox in 2017 and since adopted elsewhere, that lets two controllers be combined so they act as a single logical controller driving the same in-game player. The feature was created primarily for disabled…

Copilot (Shared Control)(also: Gaming Copilot, Assistive Copilot)

In shared-control video gaming, the copilot is the secondary actor who supports the pilot (the primary player, typically a person with a disability) by taking over game actions the pilot cannot perform. A copilot can be a human partner — often a family member, friend, or trained…

Curse of Dimensionality (Accessibility)

In an accessibility context, the practical barrier that arises when a player or user must coordinate a large number of distinct inputs simultaneously or in rapid succession — for example, moving, aiming, shooting, and reloading concurrently in a first-person shooter. Even when…

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