In one line: There are reliable tricks that make people more likely to agree to a request — and they work on all of us.
Compliance is a sociocultural-approach idea. Compliance techniques are specific strategies that raise the chance someone says yes.
Salespeople, charities and campaigners use these on purpose. Understanding them links to the concept of causality: a well-chosen technique can cause agreement that a plain request would not.
Memory hook: Small trick, big 'yes'. Compliance techniques nudge people towards agreeing.
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Key idea: Most techniques work by setting up the request so that saying yes feels natural or consistent.
Compliance techniques
Foot-in-the-door
Start with a tiny request; once someone agrees, they're more likely to agree to a bigger one (to stay consistent).
Door-in-the-face
Start with a big request they'll refuse; the smaller real request then seems reasonable by comparison.
Low-balling
Get agreement on a good deal, then reveal added costs; people often stick with their commitment.
Reciprocity
Give something small first (a free sample); people feel obliged to give back by saying yes.
Small→big · Big→small · Sweeten · Give first
Take a charity collector. Foot-in-the-door: 'just sign this petition' → later, 'now donate?'. Door-in-the-face: 'give £50 a month?' → 'okay, £5?'. Reciprocity: a free pin badge, then the ask. Each technique causes more yeses than a bare request.
Go further — higher-level insight: These work through consistency and social norms, not logic. Foot-in-the-door leans on wanting to seem consistent; reciprocity on a deep social rule that gifts must be repaid. Naming why a technique works is a high-level move.
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Key idea: The techniques are well-evidenced and practical, but they don't work every time or on everyone.
| Strengths and limitations | Strengths | Limitations |
|---|---|---|
| Evidence | Demonstrated in many field and lab studies | Effects vary by person, culture and situation |
| Use | Explains sales, charity, marketing, persuasion | Some techniques (low-balling) raise ethical concerns |
| Reach | Practical for campaigns and everyday requests | Can fail or backfire if the trick is obvious |
So compliance techniques are reliable, useful and well-supported, but a good evaluation notes their effect sizes vary, some raise ethical issues, and they can backfire once people notice the manipulation.
Watch out: Compliance is not obedience or conformity. Compliance = responding to a direct request; conformity = matching a group; obedience = following an authority's order. Keep them distinct.