# Behaviour Change Is Not Linear The intuitive model of behaviour change is linear: understand the problem, decide to change, apply effort, achieve the change. Most organisational change programmes are built on this model. It is wrong enough to be dangerous. Behaviour change is non-linear, iterative, and often involves apparent regression. Someone can understand the problem clearly, decide to change genuinely, and still not change — or change temporarily, then return to the prior behaviour. This is not weakness or lack of commitment. It is how change actually works. ## Why the linear model fails **Motivation ≠ action.** Understanding and intent are necessary but not sufficient. Fogg's B=MAP model (Behaviour = Motivation × Ability × Prompt) shows that behaviour requires all three conditions simultaneously. High motivation doesn't produce behaviour if the ability is missing or the cue is absent. Most change programmes focus almost entirely on motivation (the case for change) while leaving ability and environmental prompting unchanged. **Change has stages.** Prochaska and DiClemente's Transtheoretical Model identifies distinct stages — precontemplation, contemplation, preparation, action, maintenance — and the implication is that different interventions are appropriate at different stages. Giving action-stage interventions to someone in the contemplation stage doesn't accelerate change; it typically produces resistance or superficial compliance. **Relapse is part of the process.** The Transtheoretical Model explicitly includes relapse as a normal stage, not as failure. People cycle through the stages, often multiple times, before achieving sustained change. Treating relapse as failure is both inaccurate and counterproductive — it triggers shame, which tends to accelerate disengagement rather than re-engagement. **The environment shapes behaviour more than intention does.** People change behaviour more reliably when their environment changes than when their attitude changes. Remove the friction from the desired behaviour; introduce friction to the undesired behaviour; create reliable prompts; make the default the right option. Environmental design often outperforms motivation campaigns. ## The organisational implication Organisations that approach culture change as an information and persuasion problem — explaining why the change matters, making the case — are using a linear model. They often observe that people "understand" and "agree" with the change but don't do it. This is because agreement and action are not the same stage. The non-linear model asks different questions: What stage are people at? What would move them to the next stage (not the final stage)? What environmental structures support or undermine the target behaviour? What makes the current behaviour easy and the desired behaviour hard? ## See Also - [[Stages of Change (Prochaska)]] — the Transtheoretical Model in full; the six stages and their implications for intervention - [[Fogg Behavior Model]] — the B=MAP frame; motivation, ability, and prompt as simultaneous requirements - [[Enabling vs Governing Constraints]] — the environmental design angle; constraints that enable desired behaviour rather than just motivating it - [[Psychological Safety]] — safety is an environmental condition that affects ability (the perceived cost of trying the new behaviour) - [[Mindset and Culture Change]] — the coaching and organisational change context