Ola Svenson, professor emeritus at Stockholm University and senior research scientist at Decision Research, received his Ph.D. from Stockholm University with a thesis on psychophysics and measurement theory under the supervision of Professor Gösta Ekman. He has worked for many years with basic research in cognition and decision making and is one of the pioneers who introduced a process perspective and the think-aloud method in behavioral decision research. Dr. Svenson started the European Group for Process Tracing of Decision Making, EGPROC, which has met annually since 1981. His applied research includes studies of traffic safety, risk analysis, risk perception, and nuclear safety. Dr. Svenson is a past president and board member of the European Association for Decision Making. He has been a member of the board of the U. S. Society for Risk Analysis, is a honorary member of that society and received its European Distinguished Achievement Award in 1997.