David Williamson Shaffer is an internationally recognized expert on teaching and assessing 21st Century skills through educational games. He is best known for the development of Virtual Internships for students in high school and college and for corporate training and assessment, as well as his work using quantitative ethnography to measure complex thinking. Dr. Shaffer is a highly sought-after speaker, teaching a course at the University of Wisconsin on making effective presentations. He is currently the Vilas Distinguished Achievement Professor of Learning Sciences at the University of Wisconsin-Madison and a Game Scientist at the Wisconsin Center for Education Research. Before coming to the University of Wisconsin, Dr. Shaffer was a teacher, teacher-trainer, curriculum developer, and game designer, including work with the Asian Development Bank and US Peace Corps in Nepal and as a 2008-2009 European Union Marie Curie Fellow. His Ph.D. is from the Media Laboratory at the Massachusetts Institute of Technology. He is the author of How Computer Games Help Children Learn and Quantitative Ethnography.