Dr. Bill Curtis is the senior vice president and chief scientist at CAST, a leader in providing technology for measuring and evaluating application software quality. He coauthored The People Capability Maturity Model (CMM), The People CMM, and The Business Process MM. Until its acquisition by Borland, he was the cofounder of and chief scientist at TeraQuest, a global leader in providing CMM-based services. He is a former director of the Software Process Program in the Software Engineering Institute (SEI) at Carnegie Mellon University. Prior to joining the SEI, Dr. Curtis worked for MCC, ITT’s Programming Technology Center, GE Space Division, and Weyerhaeuser, and also taught statistics at the University of Washington. While a staff psychologist in Weyerhaeuser’s Human Resources Department, he codeveloped the training for their performance appraisal system and conducted organizational effectiveness interventions in several divisions. Dr. Curtis holds a Ph.D. with emphasis in organizational psychology and statistics from Texas Christian University. He has published four books and more than 150 articles, and was recently elected a Fellow of the Institute of Electrical and Electronics Engineers for his contributions to software process improvement and measurement.