Reciprocity Bias
Type: Social / Cognitive Bias
Local HTML: reciprocity.html (if exists)
Definition
We feel obligated to return favors, gifts, and concessions. The rule of reciprocity is deeply ingrained in human social psychology.
Robert Cialdini’s research: The reciprocity principle is one of the most powerful social forces. Even unwanted favors create obligation.
Why It Matters
Sales: Free samples create obligation to buy. Negotiation: Small concessions trigger reciprocal concessions. Relationships: Keeping score of favors given and received. Manipulation: Unwanted gifts create uncomfortable obligation.
The Mechanism
- Social norm — Reciprocity maintains social bonds
- Discomfort — Not reciprocating feels wrong
- Exploitation — Can be triggered by small, strategic favors
- Escalation — Reciprocal concessions can spiral
Examples
- Hare Krishna: Giving flowers at airports → donations
- Free samples: Costco, perfume counters
- Negotiation: “I’ll lower my price if you…”
- Politics: Favor trading, logrolling
Fighting Unwanted Reciprocity
- Recognize it — Is this a genuine favor or a trap?
- Accept and ignore — Take the sample, walk away
- Reframe — “This is a sales tactic, not a gift”
- Give back differently — Reciprocate with thanks, not purchase
Related Biases
- [[Social Proof** — Following what others do
- [[Commitment Consistency** — Staying consistent with past actions
- [[Scarcity** — Wanting what is limited
Audio
Podcast episode: Reciprocity Bias
Part of the Cognitive Bias Reference