Commitment and consistency
Get a small, voluntary commitment first; people then act to stay consistent with it.
Why it works
Once people commit — especially publicly and in writing — they feel internal and social pressure to behave consistently with that stance, because inconsistency is psychologically uncomfortable and reputationally costly. A small initial yes reshapes self-image, making larger aligned asks feel natural (the foot-in-the-door effect).
How to do it
- Start with a tiny, freely chosen commitment that points the direction you want.
- Make it active, public, or written — those forms bind harder than a private thought.
- Build later requests as consistent extensions of the stance they already took.
Evidence
The foot-in-the-door effect and the power of written/public commitment are supported by classic and replicated compliance experiments in social psychology. (observational)
Commitments that feel coerced rather than freely chosen don’t reshape self-image and tend not to stick.
Common mistake
Opening with the big ask. Skipping the small initial commitment forfeits the consistency pressure that makes the later yes easy.
Practice this with IX Coach
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More practices for Cialdini’s Principles of Influence
- Reciprocity
Give something first — value, help, a concession — and people feel pulled to give back.
- Social proof
People look to what similar others are doing to decide what’s correct, especially under uncertainty.
- Authority
People defer to credible expertise — and to its symbols — more than they realize.
- Liking
We say yes to people we like — and similarity, compliments, and cooperation grow liking.
- Scarcity
Opportunities feel more valuable as they become less available.