Dr. Ritchie collaborates with scholars locally and internationally. He is a peer reviewer for more than 30 scientific journals, an action editor for 3 journals, a lead author and a coauthor on more than 40 peer-reviewed journal articles, encyclopedia entries, and book chapters; he frequently presents at conferences and as a guest lecturer.

Dr. Ritchie teaches research methods, data analysis, statistics, and other courses. He promotes students and colleagues to endeavor research, teaching, and service that span multiple academic, scientific and applied disciplines across cultures, languages and geographical locations.