This book is based on a study that was partially sponsored by Project Management Institute. We are grateful for the support and the collaboration of Dr. Edwin Andrews, Dr. Carla Messikomer and the staff of PMI. Without their support this book would not exist. Also we would like to thank Dr. Janice Thomas who read the final draft and gave us valuable comments to improve the book. We are thankful for the support we have received from colleagues Dr. Audrey Curtis and Prof. David L. Keeney at Stevens Institute of Technology who motivated their students to participate in the study.

Finally, we thank our students, without whom this study would not have been possible. They volunteered to collect the necessary data from their companies which contributed immensely to this study. With that of course we are also thankful to all the anonymous project managers, senior managers and project team members who took the time to fill out our lengthy questionnaire. This book honors their contributions.