Eye-trackers, digital-libraries, and print-referencing: A single case study in CDKL5

•Commercially available technology tracked the visual attention of a child with a severe congenital disability and cortical visual impairment.•The technology was set up by untrained family through the assistance of remote support from researchers.•Remote data collection allowed for the participation of a medically fragile child in a safe and familiar context.•Eye-tracking may be a useful way to passively assess response to emergent literacy interventions for students with severe disabilities including cortical visual impairment. Providing emergent literacy intervention and assessing outcomes for children with low-incidence, complex disabilities with concomitant physical, cognitive, sensory, and communication impairments presents a significant challenge to researchers, educators, clinicians, and families alike. This study aimed to leverage advancements in commercially available eyetracking technologies to measure visual attention to print before and after a parentmediated print referencing intervention with a child with a severe, low incidence, congenital disability. Print referencing means drawing attention to the print on the page while reading. The single case study investigated a mother-daughter dyad who completed the protocol using eye-gaze technology, digital children’s books, and a computer configured with software for observing and recording interactions that were shipped to the family’s home and set up by the mother with remote support from a researcher. Results demonstrate that the eye-tracker successfully captured the participant’s eye-gaze. Furthermore, mean-level shifts in frequency of fixations demonstrates changes in visual attention to print after the parent introduced the print referencing strategy during reading. Commercially available eye-trackers and digital libraries were successfully used by the parent-child dyad to record visual attention. Furthermore, remote support from a trained researcher was sufficient to support the parent through set-up, calibration, intervention, and implementation.