Which change model when: Kotter vs ADKAR vs Lewin vs Bridges vs the Satir change curve

60-Second Summary

The five major change models aren't competitors — each is optimised for a different kind of change.
Kotter's 8 Steps: large-scale, leader-led transformation with urgency. Best for re-orgs, strategy pivots, M&A.
ADKAR: individual change at scale (e.g. tool rollout, process change). Diagnostic — find which letter (A/D/K/A/R) is stuck for which employee group.
Lewin's Unfreeze-Change-Refreeze: foundational mental model; underpins everything. Best for explaining why change feels hard and why you must 'refreeze' to make it stick.
Bridges' Transitions: the psychological model. Ending → Neutral Zone → New Beginning. Use it when the human cost of change is high (layoffs, leadership changes, identity shifts).
Satir Change Curve: maps the emotional dip every team goes through. Old Status Quo → Foreign Element → Chaos → Integration → New Status Quo. Use it to set expectations: the dip is normal, not a sign change is failing.

Most HR people have heard of all five of these models. Very few can articulate which to use when — or that the right answer is usually to use several together. This guide is the comparison piece. Deep dives on Kotter, ADKAR, and Lewin live in the Change Management category; this article links them together and adds Bridges and Satir, which are under-taught.

Why these aren't competitors

Kotter is a sequence (do these 8 things in order). ADKAR is a diagnostic (which of these 5 letters is blocking adoption?). Lewin is a metaphor (you have to thaw the old before freezing the new). Bridges is a psychology (every change is an ending before it's a beginning). Satir is a curve (expect the dip; ride it out).

A sophisticated change effort uses several at once. Kotter as the project plan. ADKAR as the diagnostic tool every two weeks. Lewin as the mental model in leader communication. Bridges as the emotional language. Satir as the expectation-setting graph.

Quick-reference: each model in 30 seconds

The five models compared

1
Kotter's 8 Steps (1996)
Urgency → Coalition → Vision → Communicate → Empower → Wins → Sustain → Anchor. Leader-driven, top-down, sequence-based. Best for: large-scale transformation. See full article in Change Management category.
2
ADKAR (Prosci, 1996)
Awareness → Desire → Knowledge → Ability → Reinforcement. Individual-level diagnostic. For any employee group, find which letter is blocking them. Best for: tool/process rollouts at scale.
3
Lewin Unfreeze-Change-Refreeze (1947)
Three stages: unfreeze (create dissatisfaction with status quo), change (move to new way), refreeze (lock it in). Foundational; underpins almost every other model. Best for: explaining why change feels hard.
4
Bridges Transitions (1991)
Ending (letting go of the old) → Neutral Zone (uncomfortable in-between) → New Beginning (committing to the new). Psychological, not procedural. Best for: high-emotional-cost changes — layoffs, leader changes, mergers.
5
Satir Change Curve (1991)
Old Status Quo → Foreign Element → Chaos (performance drops) → Transforming Idea → Integration → New Status Quo. Plots performance/morale over time. Best for: setting expectations during the inevitable mid-change dip.

The decision matrix

If your change is…	Lead with…	Add…
A company-wide strategic transformation	Kotter (project sequence)	ADKAR for individual adoption + Bridges for emotional cost
A tool / system / process rollout (e.g. new HRIS)	ADKAR (diagnostic per group)	Lewin as the mental framing
A reorg or M&A integration	Kotter + Bridges (procedural + psychological)	Satir to set expectations on the chaos phase
A culture change (slower, behavioural)	Lewin (unfreeze the old) + Bridges (let people grieve)	Q12 / engagement data as the measurement
A leadership transition (CEO change, founder exit)	Bridges (Ending matters most)	Satir to communicate the team's dip
Layoffs / restructure (people leaving)	Bridges (Ending for those leaving AND those staying)	Survivor-syndrome interventions — outside the scope of these models

How to combine them

Use Kotter as the *plan* — what activities will you do in what order, with what coalition.
Use ADKAR as the *diagnostic* every two weeks — which of the 5 letters are people stuck on?
Use Lewin as the *frame* — explicitly talk about unfreezing, the messy middle, and what 'refreezing' will look like.
Use Bridges as the *human* layer — name the Ending. Acknowledge the Neutral Zone. Don't rush the New Beginning.
Use Satir as the *expectations* curve — share it with leaders before the change starts. When the dip comes, they'll recognise it instead of panicking.

What goes wrong with each

Model	Common failure
Kotter	Treated as a checklist. Step 1 (urgency) gets skipped or faked, and the whole plan stalls at step 4 (communication).
ADKAR	Used as a training plan (which only addresses Knowledge and Ability). Most adoption problems are actually Awareness or Desire — and training doesn't fix those.
Lewin	Refreeze gets skipped. The new behaviour never becomes 'how we do things'; people revert within 6 months.
Bridges	Ignored in transactional change ('it's just a new tool'). When change has emotional weight, ignoring Bridges turns up later as resistance, attrition, or quiet quitting.
Satir	Used as an explanation after the fact, not as expectation-setting before. Leaders panic during the Chaos phase and reverse course just before the Transforming Idea would land.

FAQ

Frequently asked questions

Which is the most popular in 2026?

Kotter is the most-cited; ADKAR is the most-implemented (Prosci certification is ubiquitous in large change-management programs). Bridges is having a quiet renaissance as HR teams realise that procedural models alone don't explain why change feels hard.

Is there a 'better' modern alternative?

There's no consensus replacement. McKinsey's Influence Model and Heath brothers' Switch (Direction / Motivation / Path) are well-regarded extensions. None of them obsolete the five classics.

How do I pick one if I'm new?

Start with ADKAR — it's the most actionable diagnostic and the easiest to teach to managers. Add Lewin as the mental model. Layer Kotter on large efforts. Add Bridges/Satir when the emotional weight is high.