Related Experiment Video
Updated: May 13, 2026

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Practical Methodology of Cognitive Tasks Within a Navigational Assessment
Published on: June 1, 2015
Participants' dynamic orientation to folder navigation when using a VOCA with a touch screen in talk-in-interaction
Niklas Norén1, Eva Svensson, Jeanette Telford
1Department of Neuroscience, Uppsala University, Sweden. niklas.noren@edu.uu.se
Summary
This study examines how children with cerebral palsy use voice output communication aid (VOCA) devices during conversations. The adult
Area of Science:
- Conversation analysis
- Human-computer interaction
- Augmentative and Alternative Communication (AAC)
Background:
- Investigates the interaction dynamics between a child with cerebral palsy and an adult.
- Focuses on the use of a computer-based voice output communication aid (VOCA) device with a touch-sensitive screen.
- Data collected from video recordings of naturalistic school activities.
Observation:
- The study analyzes the turn construction process mediated by the VOCA device.
- Observes public displays of turn projection, including hand movements, screen navigation, and synthetic speech.
- Examines how adult interlocutors orient to these projections during conversation.
Findings:
- Adults' contributions can foster further AAC user involvement in ongoing turns.
- Adult-initiated repairs on topical development may limit the AAC user's influence on conversation flow.
- The visible nature of VOCA use shapes conversational turn-taking and topic management.
Implications:
- Findings inform clinical assessment and intervention strategies for AAC users.
- Highlights the importance of understanding interactional dynamics in AAC use.
- Provides insights into supporting effective communication for individuals with cerebral palsy.
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