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

1. Start with a tiny, freely chosen commitment that points the direction you want.
2. Make it active, public, or written — those forms bind harder than a private thought.
3. 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.