sentences:  With more than 130 conference papers to his credit, his work has been presented nationwide in the United States, as well as in parts of Europe, where he has been a visiting professor at the University of Cologne (Germany) and lectured in Finland.Sarvela earned a bachelor's degree in psychology in 1981, a master's degree in educational psychology in 1983 and a doctorate in health education in 1984, all from the University of Michigan.He began his professional career as a program evaluator for Ford Aerospace and Communications Corporation (1984–86), primarily doing classified work for the National Security Agency.