Lewin-Schein Change Theory
Lewin's three-phase model, sharpened by Schein's mechanics of survival and learning anxiety, says a change only sticks if people are genuinely unfrozen before it's introduced and refrozen into routine afterwards.
Watch the change move through three linked boxes, from loosening old habits to bedding the new ones into routine.
Reach for this when…
- A change was announced properly and still died within a month.
- People nod in the meeting and quietly revert to the old way within a week.
- A leader wants a shift to stick, not just to launch.
How to run it
- Unfreeze: show where current performance falls short and build enough safety that people can actually hear it.
- Raise survival anxiety about the cost of not changing, while lowering learning anxiety about the change itself.
- Identify exactly what must change, by modelling a respected other or scanning several examples.
- Move: make the specific change.
- Refreeze: embed it in structures, rewards, and relationships so it becomes the default.
A worked example
Situation. Nadia Benali runs Atlas Textiles, a garment manufacturer in Casablanca, Morocco, and had already tried once to introduce a new quality-control checklist. It died within a fortnight of the announcement.
Applied. On the second attempt she started at Unfreeze: showed floor supervisors the actual defect-return numbers before mentioning any new process, so the cost of doing nothing became real to them first. Only then did she introduce the checklist, and immediately built it into the shift-handover ritual with a small line bonus attached.
Result. Eight weeks later the checklist was just how the shift ended, not a directive people were quietly working around.
The catch
The 'refreeze' idea has aged badly - it implies a stability most organisations under constant change don't get to have anymore. And unfreezing done badly, dumping bad news without lowering learning anxiety, produces defensiveness rather than readiness.
If you skip straight to 'change', you haven't unfrozen anything - you've just given people something to quietly resist.
Origin: Kurt Lewin (extended by Edgar Schein)