Literature Reviews

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

• Phoneme-based Predictive Text Entry Interface

  Ha Trinh, Annalu Waller, Keith Vertanen, Per Ola Kristensson, Vicki L. Hanson (2014) — Proceedings of the 16th International ACM SIGACCESS Conference on Computers & Accessibility (ASSETS)

  This paper presents iSCAN-2, an iPad application that enables nonspeaking individuals to enter text by selecting phonemes (speech sounds) rather than spelling words with letters. People with severe speech impairments often face challenges in literacy…

  • AAC
  • text entry
  • phoneme
  • speech impairment
  • word prediction
  • literacy
  • assistive technology
  • pie menu

• Text Entry Using a Compact Keypad with OSDS

  Torsten Felzer, Stephan Rinderknecht (2014) — Proceedings of the 16th International ACM SIGACCESS Conference on Computers & Accessibility (ASSETS)

  This demo paper presents OSDS (OnScreenDualScribe), a Windows software tool that enables people with neuromuscular diseases to replace a standard full-size keyboard with a compact 19-key numeric keypad called the DualPad. For people with conditions t…

  • text entry
  • alternative input
  • keyboard replacement
  • neuromuscular disease
  • motor disability
  • word prediction
  • assistive technology

• User Interaction with Word Prediction: The Effects of Prediction Quality

  Keith Trnka, John McCaw, Debra Yarrington, Kathleen F. McCoy, Christopher Pennington (2009) — ACM Transactions on Accessible Computing (TACCESS)

  This study investigates how the quality of word prediction systems affects both communication speed and user behavior in augmentative and alternative communication (AAC). The researchers conducted a controlled experiment with 33 adult participants wh…

  • AAC
  • word prediction
  • language models
  • communication rate
  • user study
  • assistive technology

• Sibylle, an assistive communication system adapting to the context and its user

  Tonio Wandmacher, Jean-Yves Antoine, Franck Poirier, Jean-Paul Départe (2008) — ACM Transactions on Accessible Computing

  Sibylle is an augmentative and alternative communication (AAC) system designed for people with severe motor disabilities who cannot use conventional keyboards. The system has been in clinical use at the Kerpape rehabilitation center in Brittany, Fran…

  • AAC
  • word prediction
  • language modeling
  • user adaptation
  • n-gram models
  • latent semantic analysis
  • motor impairments
  • cerebral palsy
  • virtual keyboard
  • single-switch access

• Measuring the Performance of a Location-Aware Text Prediction System

  Luís Filipe Garcia, Luís Caldas De Oliveira, David Martins De Matos (2015) — ACM Transactions on Accessible Computing (TACCESS)

  This study rigorously evaluates whether adding location awareness to word and sentence prediction improves communication efficiency for AAC users. The researchers developed Eugénio, a Portuguese AAC system that combines traditional word prediction wi…

  • augmentative and alternative communication
  • word prediction
  • sentence prediction
  • location-awareness
  • context-aware computing
  • language models
  • communication rate

• OnScreenDualScribe with Point-and-Click Interface: A Viable Computer Interaction Alternative based on a Virtual Modified Numerical Keypad

  Kavita Krishnaswamy, Patricia Ordóñez, Phillip Beckerle, Stephan Rinderknecht, Torsten Felzer (2016) — Proceedings of the 18th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '16)

  This paper presents a first-person evaluation of the OnScreenDualScribe (OSDS) Point-and-Click Interface, a virtual keyboard designed for people who cannot use a standard keyboard or mouse effectively. The first author, who has Spinal Muscular Atroph…

  • text entry
  • motor disability
  • virtual keyboard
  • assistive technology
  • word prediction
  • spinal muscular atrophy
  • input methods
  • alternative input

• Designing a Context Aware AAC Solution

  Conor McKillop (2018) — Proceedings of the 20th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS '18)

  This student research competition paper explores the design of a context-aware AAC keyboard prototype that uses mobile device sensors — particularly GPS and Wi-Fi positioning — to suggest location-relevant phrases and categories for people with speec…

  • augmentative and alternative communication
  • context awareness
  • word prediction
  • cerebral palsy
  • mobile accessibility
  • speech generating devices
  • communication
  • participatory design
  • user-centered design

• Validation of a keystroke-level model for a text entry system used by people with disabilities

  Heidi H. Koester, Simon P. Levine (1994) — Proceedings of the First Annual ACM Conference on Assistive Technologies (Assets '94)

  This paper develops and validates a keystroke-level model (KLM) to predict how much word prediction software improves text generation rates compared to letter-by-letter typing for users with and without disabilities. The keystroke-level model, origin…

  • text entry
  • word prediction
  • keystroke-level model
  • spinal cord injury
  • usability
  • human-computer interaction
  • performance modeling
  • assistive technology

• The application of spatialization and spatial metaphor to augmentative and alternative communication

  Patrick Demasco, Alan F. Newell, John L. Arnott (1994) — Proceedings of the First Annual ACM Conference on Assistive Technologies (Assets '94)

  This paper presents a collaborative project between the University of Delaware and the University of Dundee investigating how spatialization and spatial metaphors from mainstream HCI research can improve interfaces for augmentative and alternative co…

  • augmentative and alternative communication
  • spatial interface
  • human-computer interaction
  • lexical access
  • information visualization
  • cerebral palsy
  • word prediction

• The Design Space of Nonvisual Word Completion

  Hugo Nicolau, Andre Rodrigues, Andre Santos, Tiago Guerreiro, Kyle Montague, Joao Guerreiro (2019) — Proceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2019)

  This paper presents the first design space for nonvisual word completion on mobile devices, addressing a gap where word completion interfaces — ubiquitous in sighted mobile typing — remain poorly designed for screen reader users. While sighted users …

  • blindness
  • text entry
  • mobile accessibility
  • screen readers
  • word prediction
  • touchscreen
  • design space
  • participatory design