Dr. Christopher S. Norrie is the principal investigator for the DACCO Project, which seeks to enhance the accessibility and accuracy of assessment batteries for learners with severe speech and physical impairments, at Stichting OOK-OC! in the Netherlands. He completed his PhD studies in HCI at the University of Dundee, Scotland, in 2021 and applies iterative, user-driven design processes to research ways of improving access to augmentative and alternative communication tools and strategies for people with congenital or acquired communicative impairments. He has published numerous papers in peer-reviewed journals and has presented his work at conferences from Australia to Canada. His research interests include augmentative and alternative communication; tangible user interfaces; human–computer interaction; special education; dynamic assessment; user interface design; user-centred design and ethnographic research methodologies.