The $0.05 Mint That Increased Tips by 23%

A simple mint at the end of a meal can increase tips by 3%. Two mints? Tips don't double — they quadruple. But the most surprising result came when waiters gave one mint, walked away, paused, turned back, and said, "For you nice people, here's an extra one." Tips jumped 23%. That's the Principle of Reciprocity — the first of Dr. Robert Cialdini's seven principles of influence. It's not what you give. It's how. The key: be the first to give, and make it personalized and unexpected. 📚 Learn all 7 Principles of Influence → cialdini.com 🎓 Try Cialdini Delphi (ask Dr. Cialdini anything for $5) → cialdini.com/delphi 📩 Bring Cialdini training to your team → team@cialdini.com #Reciprocity #Cialdini #Influence #Persuasion #Psychology #BehavioralScience #Sales #Negotiation #Leadership #Marketing #businessgrowth #sales #marketing #ifluence #persuasion #science #thinkcialdini #readcialdini #training #keynotes #learning reciprocity, robert cialdini, cialdini influence, principle of reciprocity, mint study, restaurant tipping experiment, science of persuasion, 7 principles of influence, behavioral science, persuasion psychology, sales psychology, negotiation tactics, give first, ethical influence, cialdini institute, influence principles, reciprocation, tipping psychology, cialdini reciprocity, robert cialdini mint study