Literature Reviews

Reviewed research papers, articles, and publications relevant to digital accessibility.

• Supporting Money Management among Adults with Down Syndrome: A Multi-Technology Probe Study

  Hailey L. Johnson, Heidi Spalitta, Callie Y. Kim, Bilge Mutlu (2026) — Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems (CHI '26)

  Johnson, Spalitta, Kim, and Mutlu designed three cash-based budgeting technology probes for adults with Down syndrome (AwDS) and ran a comparative usage study with seven participants aged 19-39. The work is motivated by a gap between special-educatio…

  • Down syndrome
  • intellectual disability
  • assistive technology
  • financial accessibility
  • augmented reality
  • tangible interface
  • gamification
  • technology probe
  • autonomy
  • HCI
  • qualitative research

• A Novel Wayfinding System Based on Geo-coded QR Codes for Individuals with Cognitive Impairments

  Yao-Jen Chang, Shih-Kai Tsai, Yao-Sheng Chang, Tsen-Yung Wang (2007) — Proceedings of the 9th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '07)

  This paper presents a wayfinding prototype system that uses geo-coded QR codes placed at decision points along routes to provide just-in-time navigation directions to people with cognitive impairments. Developed by researchers at Chung Yuan Christian…

  • cognitive impairment
  • wayfinding
  • QR code
  • navigation
  • ubiquitous computing
  • intellectual disability
  • Down syndrome
  • independent living
  • assistive technology

• Indoor Wayfinding: Developing a Functional Interface for Individuals with Cognitive Impairments

  Alan L. Liu, Harlan Hile, Henry Kautz, Gaetano Borriello, Pat A. Brown, Mark Harniss, Kurt Johnson (2006) — Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '06)

  This paper from the University of Washington describes the design and user evaluation of an indoor wayfinding system for individuals with cognitive impairments, including traumatic brain injury, Down syndrome, pervasive developmental disorder, and ce…

  • cognitive impairment
  • wayfinding
  • indoor navigation
  • wizard of oz
  • multimodal interface
  • adaptive interface
  • traumatic brain injury
  • Down syndrome
  • cerebral palsy
  • assistive technology

• Analysis of Speech Properties of Neurotypicals and Individuals Diagnosed with Autism and Down Syndrome

  Mohammed E. Hoque (2008) — Proceedings of the 10th International ACM SIGACCESS Conference on Computers and Accessibility (Assets '08)

  This MIT Media Lab study systematically compares speech properties across three groups — neurotypicals (NT), individuals with autism spectrum disorder (ASD), and individuals with Down syndrome (DS) — using 100 minutes of audio data from 10 natural on…

  • speech processing
  • autism
  • Down syndrome
  • speech production
  • prosody
  • assistive technology
  • affective computing
  • speech analysis

• Understanding the Computer Skills of Adult Expert Users with Down Syndrome: An Exploratory Study

  Jonathan Lazar, Libby Kumin, Jinjuan Heidi Feng (2011) — The Proceedings of the 13th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)

  This paper presents an ethnographic study of ten adult expert computer users with Down syndrome, observed in their homes and workplaces for a minimum of two hours each. The research aimed to move beyond earlier survey-based studies (which relied on p…

  • Down syndrome
  • cognitive accessibility
  • intellectual disability
  • employment
  • workplace accessibility
  • human-computer interaction
  • digital inclusion
  • user research

• Making It Simplext: Implementation and Evaluation of a Text Simplification System for Spanish

  Horacio Saggion, Sanja Štajner, Stefan Bott, Simon Mille, Luz Rello, Biljana Drndarevic (2015) — ACM Transactions on Accessible Computing

  This paper presents Simplext, the first comprehensive automatic text simplification (ATS) system for Spanish. The research addresses a fundamental accessibility barrier: textual content written in complex language excludes people with cognitive disab…

  • text simplification
  • natural language processing
  • cognitive accessibility
  • readability
  • Spanish
  • intellectual disability
  • Down syndrome
  • automatic text simplification

• Computer Usage by Children with Down Syndrome: Challenges and Future Research

  Jinjuan Feng, Jonathan Lazar, Libby Kumin, Ant Ozok (2010) — ACM Transactions on Accessible Computing

  This landmark study presents findings from a large-scale survey of approximately 600 parents of children with Down syndrome (DS) about their children's computer usage challenges. The research addresses a critical gap: while DS characteristics are wel…

  • Down syndrome
  • cognitive accessibility
  • developmental disabilities
  • children
  • survey research
  • input devices
  • educational technology

• Investigating User Behavior for Authentication Methods: A Comparison between Individuals with Down Syndrome and Neurotypical Users

  Yao Ma, Jinjuan Feng, Libby Kumin, Jonathan Lazar (2013) — ACM Transactions on Accessible Computing

  This groundbreaking study provides the first experimental research on how individuals with Down syndrome (DS) interact with web authentication mechanisms. The researchers conducted a six-week longitudinal study with 10 adults with DS (ages 18-39) and…

  • cognitive accessibility
  • Down syndrome
  • authentication
  • passwords
  • security
  • cognitive disability

• Investigating Information Search by People with Cognitive Disabilities

  Ruimin Hu, Jinjuan Heidi Feng (2015) — ACM Transactions on Accessible Computing

  This empirical study investigated how people with cognitive disabilities navigate websites with different content structures and use search engines to find information. Twenty-three participants with various cognitive disabilities (primarily Down syn…

  • cognitive disabilities
  • information search
  • web navigation
  • website structure
  • search engines
  • Down syndrome
  • information architecture
  • usability

• Towards Designing Mobile Apps for Independent Travel: Exploring Current Barriers and Opportunities for Supporting Young Adults with Down's Syndrome

  A. M. Khan, P. Langdon, J. Bichard, P. J. Clarkson, S. Tunnard, L. Dubiel, P. Dunlop, M. Lennon (2021) — ACM Transactions on Accessible Computing

  This comprehensive study uses a three-cycle Participatory Action Research (PAR) methodology to understand barriers to independent travel for young adults with Down's Syndrome (DS) and develop a smartphone app prototype to address them. The research i…

  • Down syndrome
  • intellectual disabilities
  • independent travel
  • public transport accessibility
  • wayfinding
  • mobile apps
  • participatory action research
  • co-design
  • navigation
  • cognitive accessibility