Ritter has received study fellowships from the Air Force Office of Scientific Research, the European Science Foundation's program on Learning in Humans and Machines, and the Fulbright Kommision (D). He has created several web sites, one of which, the Soar-FAQ, won an award for being frequently cited. He has created software, tutorials, and methodology for cognitive modeling. Ritter has published numerous refereed books, articles, and conference papers in cognitive modeling, HCI, AI, and psychology. He twice co-edited the proceedings of a conference on cognitive modeling and a special issues of Computational Mathematical Organizational Theory and the International Journal of Human-Computer Studies on cognitive models as users. He is an associate editor of Human Factors and Editor of the Oxford Series on Cognitive Models and Architectures. His research has been funded by the US Office of Navy Resarch, the US Air Force Office of Scientific Research, DSTL, DARPA, the Defense Evaluation and Research Agency (U.K.), and the U.K. Joint Council Initiative on Cognitive Science and Human Computer Interaction, as well as corporations in the U.S. and Europe.
Ritter studies cognitive modeling, cognitive architectures, human-computer interaction, and learning. He has taught cognitive modeling, skills to slow down the spread of COVID-19 and similar diseases, cognitive architectures, human-computer interaction, human factors, user interface design, cognitive psychology, artificial intelligence, and discrete math. He recently lead a team of ten medical doctors, nurses, learning scientists, nutritionists, psychologists, to create the first public health textbook to teach skills to obstruct pandemics (StOP), non-pharmacological interventions (NPIs), which are the first line of defense against disease. It is available as a free online tutor created using the Declarative to Procedure (D2P) tutoring system developed in his lab. He is working on a book for Oxford University Press on the design patterns to create, understand, and explain models of cognition and AI programs.