Reciprocity: Give First, Get Yes
research · Influence: The Psychology of Persuasion (1984)
The universal social norm of returning a favor — if you give something meaningful first, the other person feels obligated to give back.
Core Concepts
The Problem
How to make an ask land when the other person has no pre-existing reason to say yes.
The Claim
People feel a deep obligation to repay a meaningful gift, so giving value before the request reliably increases agreement.
Key Evidence
- •In the episode, handing a balloon to a child at a restaurant door led their parents to buy 25% more food.
Practical Implication
Open with real value rather than the ask; the favor doesn't need to be matched in kind, only felt as genuine.
Nuance & Limits
The gift needs to be meaningful and given before the request — a transactional or cheap gesture won't trigger the same obligation.
Source Material
Citation Density
High — one of the most replicated findings in social psychology
Gaps
- ⚠ Whether the strength of the reciprocity effect varies across cultures that place less emphasis on social debt.
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