Conversational voice user interfaces supporting individuals with Down syndrome: A literature review
Overview
This research reviews 43 studies exploring how people with Down syndrome interact with Conversational Voice User Interfaces (CVUIs), like voice assistants. While CVUIs are designed to be intuitive for most users, anatomical and physiological differences in speech can make them difficult to use for individuals with Down syndrome. We highlight common challenges, including small datasets for training speech-to-text systems and limited representation in design and evaluation. It also points to growing interest in involving people with Down syndrome in these processes, especially to support communication, therapy, and daily assistance. We call for more inclusive, user-centered approaches to make voice technologies more accessible for neurodiverse communities.
Methods
Conducted a systematic literature review using the PRISMA methodology to identify and analyze 43 peer-reviewed studies on CVUIs for individuals with Down syndrome.
Co-developed query based inclusion and exclusion criteria to ensure comprehensive coverage in the relevant publications (ACM, IEEE, PubMed, Scopus, Web of Science).
Used open coding techniques with collaborative Miro boards to synthesize data and uncover thematic trends across studies.
Categorized findings based on form factors, speech-to-text technologies, design goals, and user study methodologies using Mendeley Reference Manager.
Identified design gaps and research opportunities, contributing to a framework for accessible, inclusive CVUI design for neurodivergent users.
Contributions
Peer reviewed publication at ACM.
End-to-end execution of a systematic literature review, including PRISMA-based screening, thematic synthesis, academic writing, and peer-review revision.
Identification of design considerations and components that must be considered in designing CVUIs for users with Down syndrome.
Synthesis of features and challenges individuals with Down syndrome face when using CVUIs according to current research literature.
Team
Principal Investigator: Dr. Franceli Cibrian
Co-authors: Concepción Valdez, Lauren Min