ADKAR

Jeff Hiatt's ADKAR model has become one of the most widely adopted frameworks in organizational change management, and this compact 146-page book explains why. The acronym — Awareness, Desire, Knowledge, Ability, Reinforcement — gives practitioners a sequential checklist for the human side of any change initiative, grounded in research across more than 900 companies in 59 countries. GetAbstract and MindTools cite it as a standard reference; it appears regularly in academic change management literature. Reviewers consistently describe it as accessible enough for a novice and substantive enough for an experienced practitioner. The main limitation is one inherent to the model itself: its five-step tidiness can feel reductive when applied to genuinely complex organizational dynamics, and critics note the framework's proprietary link to Prosci's consulting ecosystem. For any manager or HR professional navigating a change initiative, this is a practical, efficient read.