Joost Kerkhofs is a passionate trainer, speaker, and author with over 25 years of experience in the field of change management. Since 2009, he has specialised in Organizational Behavior Management (OBM) — a practical and scientifically proven approach to measurably improve performance through positive behavioral and cultural change. Together with Robert den Broeder, he founded OBM Dynamics. This company trains and certifies ATOs and instructors to provide OBM trainings under license. Their books, trainings and exams are available in multiple languages.