Glossary

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NGOMSL(also: Natural GOMS Language)

A structured notation for writing GOMS (Goals, Operators, Methods, Selection rules) models in a program-like form that is readable by humans. NGOMSL was developed by David Kieras as a more formal variant of GOMS that includes selection rules and allows operators at the keystroke…

Natural Language Query(also: NLQ, Conversational Query, Natural Language Search)

An interaction paradigm where users pose questions or issue commands in everyday language rather than using structured search syntax, predefined filters, or navigation controls. In accessibility contexts, natural language querying is particularly valuable for screen reader users…

Natural User Interface(also: NUI)

A user interface designed to feel intuitive and invisible, allowing users to interact with technology through natural behaviors such as gestures, voice, touch, or body movement rather than learned conventions like mouse clicks or keyboard commands. NUIs are particularly valuable…

Networked Minds Social Presence Inventory(also: Networked Minds Measure of Social Presence, NMSPI)

The Networked Minds Social Presence Inventory is a self-report questionnaire developed by Biocca, Harms and colleagues to measure social presence - the sense of 'being together' with another person - in mediated environments such as video calls, virtual reality or augmented…

Non-Speech Input(also: Non-Speech Acoustic Input, Non-Verbal Voice Input)

A method of controlling computers or devices using sounds produced by the human vocal tract that are not recognised words — such as humming, whistling, hissing, clicking, or varying pitch and volume. Unlike speech recognition, which must wait for a complete utterance before…

Nonspeech Audio(also: Non-Speech Sounds, Auditory Cues)

Audio feedback in user interfaces that conveys information through sounds other than synthesized or recorded speech, including earcons (abstract musical motifs), auditory icons (realistic sounds representing actions or objects), and sonification (data mapped to sound…

Nonverbal communication(also: NVC, Body language, Nonverbal cues)

The transmission of information through channels other than spoken or written language, including facial expressions, eye contact, head gestures, hand movements, body posture, spatial proximity, and tone of voice. Nonverbal communication conveys essential social information…

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