Dich Ingar Emil Roggen (26 April 1934 – 19 October 2023) was a Norwegian sociologist, and has been described as one of the European social informatics pioneers.
Through a series of studies of health risk factors in Norwegian industries and social services in 1970-1990 he developed a system for detection, prediction and prevention of supermortality in workplaces.
From a global historical viewpoint Stein Bråten must be considered as the founder of the science of social informatics, which he originally called "socioinformatics" (Norwegian: sosioinformatikk).
At the Department of Sociology, University of Oslo (UiO) Stein Bråten inspired a group of pioneers in this field, including Eivind Jahren, Arild Jansen and Ingar Roggen.
The late Rob Kling, who had been given a personal introduction by Stein Bråten to the ongoing research on social informatics at the University of Oslo in 1986, and also had noted the introduction of web sociology in January 1996, established the American branch of social informatics at Indiana University later that year.