Social

Reciprocity

What it is

Creating a sense of obligation by giving something first.

How it works

When someone does something for us or gives us something, we feel a strong psychological urge to return the favor. This can be used to initiate a cycle of exchange that builds toward the desired outcome.

Real-world examples

  • •Free samples at a grocery store that increase purchase rates.
  • •A SaaS company offering a generous free tier before upselling.
  • •A colleague helping you with a task before asking a favor in return.

Historical case studies

Hare Krishna flower strategy

1970sFundraising

Hare Krishnas gave flowers to airport travelers before requesting donations. The small, unsolicited gift dramatically increased donation rates even among people who discarded the flower immediately.

Free samples at Costco

1980s–presentRetail

Costco reports that free samples can increase product sales by up to 2,000%. The reciprocity principle creates an unconscious obligation to purchase after receiving something free.

The Marshall Plan

1948Geopolitics

The US provided $13B in aid to rebuild Western Europe after WWII. This generosity created lasting diplomatic reciprocity, cementing Cold War alliances and establishing US economic influence for decades.

Ethical guidelines

  • ●Give value genuinely, not solely as a manipulation lever.
  • ●Do not exploit the sense of obligation for disproportionate returns.
  • ●Allow the recipient to decline without guilt.

How to defend against it

  • ►Recognize when a "gift" comes with strings attached.
  • ►Evaluate any request on its own merits, separate from what was given.
  • ►Feel free to accept a gift and still say no to the follow-up ask.

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