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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Digital Intervention(also: Digital Health Intervention, Technology-Based Intervention)
A health or behavioural support programme delivered through digital technology such as apps, games, or web platforms. Digital interventions for accessibility include cognitive training tools for people with ADHD, speech therapy apps, mental health chatbots, and gamified…
Discrete Trial Training(also: DTT, Discrete Trial Teaching, Discrete Trial Instruction)
A structured teaching method used primarily with autistic children in which skills are broken down into small, distinct components and taught through repeated, controlled trials. Each trial follows a sequence: a clear instruction or stimulus is presented, the learner responds,…
Dyadic Interaction(also: Dyad Interaction, Paired Interaction)
Social interaction between two individuals, studied as the fundamental unit of social exchange. In accessibility and intervention research, dyadic interaction is often examined in contexts such as child-caregiver pairs, student-peer partnerships, or client-therapist…

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