This document summarizes several common change management models:
1. It describes models like Kotter's 8 steps of change, Lewin's 3 stage model of unfreezing-changing-refreezing, the ADKAR model of changing individual needs, and Bridges' transition model of endings, neutral zones, and new beginnings.
2. It also outlines frameworks for analyzing factors like the McKinsey 7S model of strategy, structure, systems, and shared values, and the Burke-Litwin model relating transformational, transactional, and individual factors.
3. Each model provides a different lens for understanding change and transition at either the individual, group, or organizational level.