Eye tracking, assistive technology, and nonspeaking autism
Researchers are increasingly studying how nonspeaking people communicate, instead of assuming they cannot. Eye tracking is one of the most direct windows into agency, attention, and authorship.
What INSAR included
INSAR presentations from groups like James Rehg, Amy Rozga, and Travis Dow included eye tracking, virtual keyboards, AI-supported communication systems, and assistive communication technology. Vikram Jaswal — whose 2020 paper is cited below — has also presented at INSAR.
The supportive research
Jaswal et al. (2020), Scientific Reports used head-mounted eye tracking with nonspeaking autistic people communicating on letterboards. The findings:
- Participants visually fixated on letters before pointing to them.
- They pointed at roughly one letter per second.
- They rarely made spelling errors.
These patterns are not consistent with facilitator authorship — they are consistent with the typist authoring their own message.
Separately, broader autism literature (e.g. Federici et al., 2017) documents atypical oculomotor control, gaze regulation, and saccadic differences in some autistic people. This matters: future eye-tracking studies should account for the fact that eye movement itself depends on motor control, which can be affected in the very population being studied.
What parents need to know
Eye tracking and other technologies can investigate authorship and agency far more directly than the message-passing studies of the 1990s. The right question is no longer "is this person communicating?" but "what does the data show about how they communicate, and what does well-designed research need to account for?"
If you remember one thing
When you actually measure what nonspeaking typists are doing with their eyes, the data looks like authorship.